[PATCH net-next 2/8] net: stmicro: configure mtl rx and tx algorithms

@@ -455,6 +455,10 @@ struct stmmac_ops {
 	int (*rx_ipc)(struct mac_device_info *hw);
 	/* Enable RX Queues */
 	void (*rx_queue_enable)(struct mac_device_info *hw, u32 queue);
+	/* Program RX Algorithms */
+	void (*prog_mtl_rx_algorithms)(struct mac_device_info *hw, u32 rx_alg);
+	/* Program TX Algorithms */
+	void (*prog_mtl_tx_algorithms)(struct mac_device_info *hw, u32 tx_alg);
 	/* Dump MAC registers */
 	void (*dump_regs)(struct mac_device_info *hw, u32 *reg_space);
 	/* Handle extra events on specific interrupts hw dependent */

@@ -161,6 +161,16 @@ enum power_event {
 #define GMAC_HI_REG_AE			BIT(31)
 
 /*  MTL registers */
+#define MTL_OPERATION_MODE		0x00000c00
+#define MTL_OPERATION_SCHALG_MASK	GENMASK(6, 5)
+#define MTL_OPERATION_SCHALG_WRR	(0x0 << 5)
+#define MTL_OPERATION_SCHALG_WFQ	(0x1 << 5)
+#define MTL_OPERATION_SCHALG_DWRR	(0x2 << 5)
+#define MTL_OPERATION_SCHALG_SP		(0x3 << 5)
+#define MTL_OPERATION_RAA		BIT(2)
+#define MTL_OPERATION_RAA_SP		(0x0 << 2)
+#define MTL_OPERATION_RAA_WSP		(0x1 << 2)
+
 #define MTL_INT_STATUS			0x00000c20
 #define MTL_INT_Q0			BIT(0)
 

@@ -70,6 +70,52 @@ static void dwmac4_rx_queue_enable(struct mac_device_info *hw, u32 queue)
 	writel(value, ioaddr + GMAC_RXQ_CTRL0);
 }
 
+static void dwmac4_prog_mtl_rx_algorithms(struct mac_device_info *hw,
+					  u32 rx_alg)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	u32 value = readl(ioaddr + MTL_OPERATION_MODE);
+
+	value &= ~MTL_OPERATION_RAA;
+	switch (rx_alg) {
+	case MTL_RX_ALGORITHM_SP:
+	value |= MTL_OPERATION_RAA_SP;
+	break;
+	case MTL_RX_ALGORITHM_WSP:
+	value |= MTL_OPERATION_RAA_WSP;
+	break;
+	default:
+	break;
+	}
+
+	writel(value, ioaddr + MTL_OPERATION_MODE);
+}
+
+static void dwmac4_prog_mtl_tx_algorithms(struct mac_device_info *hw,
+					  u32 tx_alg)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	u32 value = readl(ioaddr + MTL_OPERATION_MODE);
+
+	value &= ~MTL_OPERATION_SCHALG_MASK;
+	switch (tx_alg) {
+	case MTL_TX_ALGORITHM_WRR:
+	value |= MTL_OPERATION_SCHALG_WRR;
+	break;
+	case MTL_TX_ALGORITHM_WFQ:
+	value |= MTL_OPERATION_SCHALG_WFQ;
+	break;
+	case MTL_TX_ALGORITHM_DWRR:
+	value |= MTL_OPERATION_SCHALG_DWRR;
+	break;
+	case MTL_TX_ALGORITHM_SP:
+	value |= MTL_OPERATION_SCHALG_SP;
+	break;
+	default:
+	break;
+	}
+}
+
 static void dwmac4_dump_regs(struct mac_device_info *hw, u32 *reg_space)
 {
 	void __iomem *ioaddr = hw->pcsr;

@@ -457,6 +503,8 @@ static const struct stmmac_ops dwmac4_ops = {
 	.core_init = dwmac4_core_init,
 	.rx_ipc = dwmac4_rx_ipc_enable,
 	.rx_queue_enable = dwmac4_rx_queue_enable,
+	.prog_mtl_rx_algorithms = dwmac4_prog_mtl_rx_algorithms,
+	.prog_mtl_tx_algorithms = dwmac4_prog_mtl_tx_algorithms,
 	.dump_regs = dwmac4_dump_regs,
 	.host_irq_status = dwmac4_irq_status,
 	.flow_ctrl = dwmac4_flow_ctrl,

@@ -1645,6 +1645,31 @@ static void stmmac_init_tx_coalesce(struct stmmac_priv *priv)
 }
 
 /**
+ *  stmmac_mtl_configuration - Configure MTL
+ *  @priv: driver private structure
+ *  Description: It is used for configurring MTL
+ */
+static void stmmac_mtl_configuration(struct stmmac_priv *priv)
+{
+	u32 rx_queues_count = priv->plat->rx_queues_to_use;
+	u32 tx_queues_count = priv->plat->tx_queues_to_use;
+
+	/* Configure MTL RX algorithms */
+	if (rx_queues_count > 1 && priv->hw->mac->prog_mtl_rx_algorithms)
+		priv->hw->mac->prog_mtl_rx_algorithms(priv->hw,
+						priv->plat->rx_sched_algorithm);
+
+	/* Configure MTL TX algorithms */
+	if (tx_queues_count > 1 && priv->hw->mac->prog_mtl_tx_algorithms)
+		priv->hw->mac->prog_mtl_tx_algorithms(priv->hw,
+						priv->plat->tx_sched_algorithm);
+
+	/* Enable MAC RX Queues */
+	if (rx_queues_count > 1 && priv->hw->mac->rx_queue_enable)
+		stmmac_mac_enable_rx_queues(priv);
+}
+
+/**
  * stmmac_hw_setup - setup mac in a usable state.
  *  @dev : pointer to the device structure.
  *  Description:

@@ -1688,9 +1713,9 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
 	/* Initialize the MAC Core */
 	priv->hw->mac->core_init(priv->hw, dev->mtu);
 
-	/* Initialize MAC RX Queues */
-	if (priv->hw->mac->rx_queue_enable)
-		stmmac_mac_enable_rx_queues(priv);
+	/* Initialize MTL*/
+	if (priv->synopsys_id >= DWMAC_CORE_4_00)
+		stmmac_mtl_configuration(priv);
 
 	ret = priv->hw->mac->rx_ipc(priv->hw);
 	if (!ret) {