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Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:42028) by pandora.armlinux.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lABNT-00069X-IB; Thu, 11 Feb 2021 12:47:23 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1lABNP-00066C-TH; Thu, 11 Feb 2021 12:47:19 +0000 Date: Thu, 11 Feb 2021 12:47:19 +0000 From: Russell King - ARM Linux admin To: stefanc@marvell.com Subject: Re: [PATCH v13 net-next 07/15] net: mvpp2: add FCA periodic timer configurations Message-ID: <20210211124719.GE1463@shell.armlinux.org.uk> References: <1613040542-16500-1-git-send-email-stefanc@marvell.com> <1613040542-16500-8-git-send-email-stefanc@marvell.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1613040542-16500-8-git-send-email-stefanc@marvell.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210211_074737_798899_BE717301 X-CRM114-Status: GOOD ( 16.71 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: andrew@lunn.ch, ymarkman@marvell.com, devicetree@vger.kernel.org, netdev@vger.kernel.org, atenart@kernel.org, linux-kernel@vger.kernel.org, nadavh@marvell.com, robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org, thomas.petazzoni@bootlin.com, kuba@kernel.org, mw@semihalf.com, davem@davemloft.net, gregory.clement@bootlin.com, sebastian.hesselbarth@gmail.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Feb 11, 2021 at 12:48:54PM +0200, stefanc@marvell.com wrote: > @@ -751,6 +760,10 @@ > #define MVPP2_TX_FIFO_THRESHOLD(kb) \ > ((kb) * 1024 - MVPP2_TX_FIFO_THRESHOLD_MIN) > > +/* MSS Flow control */ > +#define FC_QUANTA 0xFFFF > +#define FC_CLK_DIVIDER 100 You later change the number of tabs for these definitions in a later patch. Would it be better to start having the correct number of tabs? > + > /* RX buffer constants */ > #define MVPP2_SKB_SHINFO_SIZE \ > SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) > diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c > index 5730900..761f745 100644 > --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c > +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c > @@ -1280,6 +1280,49 @@ static void mvpp22_gop_init_10gkr(struct mvpp2_port *port) > writel(val, mpcs + MVPP22_MPCS_CLK_RESET); > } > > +static void mvpp22_gop_fca_enable_periodic(struct mvpp2_port *port, bool en) > +{ > + struct mvpp2 *priv = port->priv; > + void __iomem *fca = priv->iface_base + MVPP22_FCA_BASE(port->gop_id); > + u32 val; net likes to have reverse christmas tree variables. I think you should clean this up. However... > + > + val = readl(fca + MVPP22_FCA_CONTROL_REG); > + val &= ~MVPP22_FCA_ENABLE_PERIODIC; > + if (en) > + val |= MVPP22_FCA_ENABLE_PERIODIC; > + writel(val, fca + MVPP22_FCA_CONTROL_REG); if (en) val = MVPP22_FCA_ENABLE_PERIODIC; else val = 0; mvpp2_modify(priv->iface_base + MVPP22_FCA_BASE(port->gop_id) + MVPP22_FCA_CONTROL_REG, MVPP22_FCA_ENABLE_PERIODIC, val); avoids the need for "fca". > +} > + > +static void mvpp22_gop_fca_set_timer(struct mvpp2_port *port, u32 timer) > +{ > + struct mvpp2 *priv = port->priv; > + void __iomem *fca = priv->iface_base + MVPP22_FCA_BASE(port->gop_id); > + u32 lsb, msb; Same reverse christmas tree issue here. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel