net: mvpp2: Add RX and TX FIFO configuration for PPv2.2

This patch adds the PPv2.2 specific FIFO configuration to the mvpp2
driver. The RX FIFO packet data size is changed to the recommended
FIFO sizes. The TX FIFO configuration is newly added.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Stefan Chulski <stefanc@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

drivers/net/mvpp2.c

@@ -482,9 +482,23 @@ do {									\
 #define MVPP2_TX_DESC_ALIGN		(MVPP2_DESC_ALIGNED_SIZE - 1)
 
 /* RX FIFO constants */
-#define MVPP2_RX_FIFO_PORT_DATA_SIZE	0x2000
-#define MVPP2_RX_FIFO_PORT_ATTR_SIZE	0x80
-#define MVPP2_RX_FIFO_PORT_MIN_PKT	0x80
+#define MVPP21_RX_FIFO_PORT_DATA_SIZE		0x2000
+#define MVPP21_RX_FIFO_PORT_ATTR_SIZE		0x80
+#define MVPP22_RX_FIFO_10GB_PORT_DATA_SIZE	0x8000
+#define MVPP22_RX_FIFO_2_5GB_PORT_DATA_SIZE	0x2000
+#define MVPP22_RX_FIFO_1GB_PORT_DATA_SIZE	0x1000
+#define MVPP22_RX_FIFO_10GB_PORT_ATTR_SIZE	0x200
+#define MVPP22_RX_FIFO_2_5GB_PORT_ATTR_SIZE	0x80
+#define MVPP22_RX_FIFO_1GB_PORT_ATTR_SIZE	0x40
+#define MVPP2_RX_FIFO_PORT_MIN_PKT		0x80
+
+/* TX general registers */
+#define MVPP22_TX_FIFO_SIZE_REG(eth_tx_port)	(0x8860 + ((eth_tx_port) << 2))
+#define MVPP22_TX_FIFO_SIZE_MASK		0xf
+
+/* TX FIFO constants */
+#define MVPP2_TX_FIFO_DATA_SIZE_10KB		0xa
+#define MVPP2_TX_FIFO_DATA_SIZE_3KB		0x3
 
 /* RX buffer constants */
 #define MVPP2_SKB_SHINFO_SIZE \
@@ -3927,10 +3941,35 @@ static void mvpp2_rx_fifo_init(struct mvpp2 *priv)
 	int port;
 
 	for (port = 0; port < MVPP2_MAX_PORTS; port++) {
-		mvpp2_write(priv, MVPP2_RX_DATA_FIFO_SIZE_REG(port),
-			    MVPP2_RX_FIFO_PORT_DATA_SIZE);
-		mvpp2_write(priv, MVPP2_RX_ATTR_FIFO_SIZE_REG(port),
-			    MVPP2_RX_FIFO_PORT_ATTR_SIZE);
+		if (priv->hw_version == MVPP22) {
+			if (port == 0) {
+				mvpp2_write(priv,
+					    MVPP2_RX_DATA_FIFO_SIZE_REG(port),
+					    MVPP22_RX_FIFO_10GB_PORT_DATA_SIZE);
+				mvpp2_write(priv,
+					    MVPP2_RX_ATTR_FIFO_SIZE_REG(port),
+					    MVPP22_RX_FIFO_10GB_PORT_ATTR_SIZE);
+			} else if (port == 1) {
+				mvpp2_write(priv,
+					    MVPP2_RX_DATA_FIFO_SIZE_REG(port),
+					    MVPP22_RX_FIFO_2_5GB_PORT_DATA_SIZE);
+				mvpp2_write(priv,
+					    MVPP2_RX_ATTR_FIFO_SIZE_REG(port),
+					    MVPP22_RX_FIFO_2_5GB_PORT_ATTR_SIZE);
+			} else {
+				mvpp2_write(priv,
+					    MVPP2_RX_DATA_FIFO_SIZE_REG(port),
+					    MVPP22_RX_FIFO_1GB_PORT_DATA_SIZE);
+				mvpp2_write(priv,
+					    MVPP2_RX_ATTR_FIFO_SIZE_REG(port),
+					    MVPP22_RX_FIFO_1GB_PORT_ATTR_SIZE);
+			}
+		} else {
+			mvpp2_write(priv, MVPP2_RX_DATA_FIFO_SIZE_REG(port),
+				    MVPP21_RX_FIFO_PORT_DATA_SIZE);
+			mvpp2_write(priv, MVPP2_RX_ATTR_FIFO_SIZE_REG(port),
+				    MVPP21_RX_FIFO_PORT_ATTR_SIZE);
+		}
 	}
 
 	mvpp2_write(priv, MVPP2_RX_MIN_PKT_SIZE_REG,
@@ -3938,6 +3977,24 @@ static void mvpp2_rx_fifo_init(struct mvpp2 *priv)
 	mvpp2_write(priv, MVPP2_RX_FIFO_INIT_REG, 0x1);
 }
 
+/* Initialize Tx FIFO's */
+static void mvpp2_tx_fifo_init(struct mvpp2 *priv)
+{
+	int port, val;
+
+	for (port = 0; port < MVPP2_MAX_PORTS; port++) {
+		/* Port 0 supports 10KB TX FIFO */
+		if (port == 0) {
+			val = MVPP2_TX_FIFO_DATA_SIZE_10KB &
+				MVPP22_TX_FIFO_SIZE_MASK;
+		} else {
+			val = MVPP2_TX_FIFO_DATA_SIZE_3KB &
+				MVPP22_TX_FIFO_SIZE_MASK;
+		}
+		mvpp2_write(priv, MVPP22_TX_FIFO_SIZE_REG(port), val);
+	}
+}
+
 static void mvpp2_axi_init(struct mvpp2 *priv)
 {
 	u32 val, rdval, wrval;
@@ -4044,6 +4101,10 @@ static int mvpp2_init(struct udevice *dev, struct mvpp2 *priv)
 	/* Rx Fifo Init */
 	mvpp2_rx_fifo_init(priv);
 
+	/* Tx Fifo Init */
+	if (priv->hw_version == MVPP22)
+		mvpp2_tx_fifo_init(priv);
+
 	/* Reset Rx queue group interrupt configuration */
 	for (i = 0; i < MVPP2_MAX_PORTS; i++) {
 		if (priv->hw_version == MVPP21) {