Thread (36 messages) 36 messages, 4 authors, 2021-02-12

Re: [PATCH v13 net-next 07/15] net: mvpp2: add FCA periodic timer configurations

From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Date: 2021-02-11 13:10:20
Also in: linux-arm-kernel, lkml, netdev

On Thu, Feb 11, 2021 at 12:48:54PM +0200, stefanc@marvell.com wrote:
quoted hunk ↗ jump to hunk
@@ -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?
quoted hunk ↗ jump to hunk
+
 /* 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/
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