From patchwork Tue Oct 1 16:04:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Russell King (Oracle)" X-Patchwork-Id: 13818439 X-Patchwork-Delegate: kuba@kernel.org Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [78.32.30.218]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2091E1CB511 for ; Tue, 1 Oct 2024 16:04:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=78.32.30.218 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727798691; cv=none; b=SsvSE7fF7bzqPbR8Zd2GfJdCrg4KBsKzcI037FkgsSmj5okNZgLN16AaGsmLFpMAG6O2GYfCzPt03a+VfsdLaKmhiitMWgLJSgnQITnZ7RW+qxFW5rP83SuBNe1VDqTlqMXYrRuopncf49nfqSDKv0fvjKk7mVzefSZM+q47os8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727798691; c=relaxed/simple; bh=8pcLN8pX33PPUmfN78vCblABwmXtoq7T5hFHblrB+hQ=; h=In-Reply-To:References:From:To:Cc:Subject:MIME-Version: Content-Disposition:Content-Type:Message-Id:Date; b=muCzGsNaKKAXnXticB9/iFm302e0Ca5j8o/R4y1Dg4KQZ+pA9TUdhKGIbweuugbqYUi9Z/2SzsYe7Xo0Rvs8ViGXswi0Y+8YcZ6q8Dy5KHKeiU4qc67283DqmXYlhKfro/dMhqSki7VSJFv/CaOxPn1/94GpiqMcxva5AIJcqbI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk; spf=none smtp.mailfrom=armlinux.org.uk; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b=Fwj0TggN; arc=none smtp.client-ip=78.32.30.218 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="Fwj0TggN" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Date:Sender:Message-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:Subject:Cc:To:From:References: In-Reply-To:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=nuCM934bkjYeY+N9UfjknkM2fOuYtRxtYepAfjE8vyg=; b=Fwj0TggNitCXsSxoIfOtkt5IRM Wn3mC8wCw3pjVtPLhGJ0oUUsQtm6gX3Xtglb//9rTDNe5po6qLKR/QEDPGofnyNgRelW/8CaThEZj /bKnSUv86T1pXa/2BBHhR5dnDooDpKiXM+/gRADlrsA2ngYnaFdJLZwHOPd2gbaEDvbnoTNJddBf9 CAJoTCo4fFvdDaBO/njR+/S+R75gosMi5xP+MPPSC30uhtl1yP7xBCTlsxF8rNnCW+4a7hrkbys71 K2+MYTbCr91s0PnWAr6AJj7QNKGXmmyWlJ2KpBinJWc7UIVPfFVGkvQn0p6a7HC0uk5yH5CGPLAWm 6LcX5A8g==; Received: from e0022681537dd.dyn.armlinux.org.uk ([fd8f:7570:feb6:1:222:68ff:fe15:37dd]:54732 helo=rmk-PC.armlinux.org.uk) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1svfMc-00066S-2g; Tue, 01 Oct 2024 17:04:38 +0100 Received: from rmk by rmk-PC.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1svfMa-005ZIX-If; Tue, 01 Oct 2024 17:04:36 +0100 In-Reply-To: References: From: "Russell King (Oracle)" To: Andrew Lunn , Heiner Kallweit Cc: Alexandre Torgue , "David S. Miller" , Eric Dumazet , Florian Fainelli , Jakub Kicinski , Jiawen Wu , Jose Abreu , Jose Abreu , linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, Maxime Coquelin , Mengyuan Lou , netdev@vger.kernel.org, Paolo Abeni , Vladimir Oltean Subject: [PATCH net-next 06/10] net: dsa: sja1105: simplify static configuration reload Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline Message-Id: Sender: Russell King Date: Tue, 01 Oct 2024 17:04:36 +0100 X-Patchwork-Delegate: kuba@kernel.org The static configuration reload saves the port speed in the static configuration tables by first converting it from the internal respresentation to the SPEED_xxx ethtool representation, and then converts it back to restore the setting. This is because sja1105_adjust_port_config() takes the speed as SPEED_xxx. However, this is unnecessarily complex. If we split sja1105_adjust_port_config() up, we can simply save and restore the mac[port].speed member in the static configuration tables. Signed-off-by: Russell King (Oracle) --- Changes since rfc: - added () to function name - fixed local variable order drivers/net/dsa/sja1105/sja1105_main.c | 65 ++++++++++++++------------ 1 file changed, 34 insertions(+), 31 deletions(-) diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c index bc7e50dcb57c..5481ccb921df 100644 --- a/drivers/net/dsa/sja1105/sja1105_main.c +++ b/drivers/net/dsa/sja1105/sja1105_main.c @@ -1257,29 +1257,11 @@ static int sja1105_parse_dt(struct sja1105_private *priv) return rc; } -/* Convert link speed from SJA1105 to ethtool encoding */ -static int sja1105_port_speed_to_ethtool(struct sja1105_private *priv, - u64 speed) -{ - if (speed == priv->info->port_speed[SJA1105_SPEED_10MBPS]) - return SPEED_10; - if (speed == priv->info->port_speed[SJA1105_SPEED_100MBPS]) - return SPEED_100; - if (speed == priv->info->port_speed[SJA1105_SPEED_1000MBPS]) - return SPEED_1000; - if (speed == priv->info->port_speed[SJA1105_SPEED_2500MBPS]) - return SPEED_2500; - return SPEED_UNKNOWN; -} - -/* Set link speed in the MAC configuration for a specific port. */ -static int sja1105_adjust_port_config(struct sja1105_private *priv, int port, - int speed_mbps) +static int sja1105_set_port_speed(struct sja1105_private *priv, int port, + int speed_mbps) { struct sja1105_mac_config_entry *mac; - struct device *dev = priv->ds->dev; u64 speed; - int rc; /* On P/Q/R/S, one can read from the device via the MAC reconfiguration * tables. On E/T, MAC reconfig tables are not readable, only writable. @@ -1313,7 +1295,7 @@ static int sja1105_adjust_port_config(struct sja1105_private *priv, int port, speed = priv->info->port_speed[SJA1105_SPEED_2500MBPS]; break; default: - dev_err(dev, "Invalid speed %iMbps\n", speed_mbps); + dev_err(priv->ds->dev, "Invalid speed %iMbps\n", speed_mbps); return -EINVAL; } @@ -1325,11 +1307,31 @@ static int sja1105_adjust_port_config(struct sja1105_private *priv, int port, * we need to configure the PCS only (if even that). */ if (priv->phy_mode[port] == PHY_INTERFACE_MODE_SGMII) - mac[port].speed = priv->info->port_speed[SJA1105_SPEED_1000MBPS]; + speed = priv->info->port_speed[SJA1105_SPEED_1000MBPS]; else if (priv->phy_mode[port] == PHY_INTERFACE_MODE_2500BASEX) - mac[port].speed = priv->info->port_speed[SJA1105_SPEED_2500MBPS]; - else - mac[port].speed = speed; + speed = priv->info->port_speed[SJA1105_SPEED_2500MBPS]; + + mac[port].speed = speed; + + return 0; +} + +/* Write the MAC Configuration Table entry and, if necessary, the CGU settings, + * after a link speedchange for this port. + */ +static int sja1105_set_port_config(struct sja1105_private *priv, int port) +{ + struct sja1105_mac_config_entry *mac; + struct device *dev = priv->ds->dev; + int rc; + + /* On P/Q/R/S, one can read from the device via the MAC reconfiguration + * tables. On E/T, MAC reconfig tables are not readable, only writable. + * We have to *know* what the MAC looks like. For the sake of keeping + * the code common, we'll use the static configuration tables as a + * reasonable approximation for both E/T and P/Q/R/S. + */ + mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries; /* Write to the dynamic reconfiguration tables */ rc = sja1105_dynamic_config_write(priv, BLK_IDX_MAC_CONFIG, port, @@ -1390,7 +1392,8 @@ static void sja1105_mac_link_up(struct phylink_config *config, struct sja1105_private *priv = dp->ds->priv; int port = dp->index; - sja1105_adjust_port_config(priv, port, speed); + if (!sja1105_set_port_speed(priv, port, speed)) + sja1105_set_port_config(priv, port); sja1105_inhibit_tx(priv, BIT(port), false); } @@ -2293,8 +2296,8 @@ int sja1105_static_config_reload(struct sja1105_private *priv, { struct ptp_system_timestamp ptp_sts_before; struct ptp_system_timestamp ptp_sts_after; - int speed_mbps[SJA1105_MAX_NUM_PORTS]; u16 bmcr[SJA1105_MAX_NUM_PORTS] = {0}; + u64 mac_speed[SJA1105_MAX_NUM_PORTS]; struct sja1105_mac_config_entry *mac; struct dsa_switch *ds = priv->ds; s64 t1, t2, t3, t4; @@ -2307,14 +2310,13 @@ int sja1105_static_config_reload(struct sja1105_private *priv, mac = priv->static_config.tables[BLK_IDX_MAC_CONFIG].entries; - /* Back up the dynamic link speed changed by sja1105_adjust_port_config + /* Back up the dynamic link speed changed by sja1105_set_port_speed() * in order to temporarily restore it to SJA1105_SPEED_AUTO - which the * switch wants to see in the static config in order to allow us to * change it through the dynamic interface later. */ for (i = 0; i < ds->num_ports; i++) { - speed_mbps[i] = sja1105_port_speed_to_ethtool(priv, - mac[i].speed); + mac_speed[i] = mac[i].speed; mac[i].speed = priv->info->port_speed[SJA1105_SPEED_AUTO]; if (priv->xpcs[i]) @@ -2377,7 +2379,8 @@ int sja1105_static_config_reload(struct sja1105_private *priv, struct dw_xpcs *xpcs = priv->xpcs[i]; unsigned int neg_mode; - rc = sja1105_adjust_port_config(priv, i, speed_mbps[i]); + mac[i].speed = mac_speed[i]; + rc = sja1105_set_port_config(priv, i); if (rc < 0) goto out;