[PATCH net-next v2 02/10] net: stmmac: xgmac: Implement set_mtl_tx_queue_weight()

[Jose Abreu]

Implement the TX Queue Weight callback. In order for this to be active
we also need to set ETS algorithm when configuring Queue.

Signed-off-by: Jose Abreu <joabreu@xxxxxxxxxxxx>

---
Cc: Giuseppe Cavallaro <peppe.cavallaro@xxxxxx>
Cc: Alexandre Torgue <alexandre.torgue@xxxxxx>
Cc: Jose Abreu <joabreu@xxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Maxime Coquelin <mcoquelin.stm32@xxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 0a32c96a7854..44d728c5c4e4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -140,7 +140,9 @@ static void dwxgmac2_prog_mtl_tx_algorithms(struct mac_device_info *hw,
 					    u32 tx_alg)
 {
 	void __iomem *ioaddr = hw->pcsr;
+	bool ets = true;
 	u32 value;
+	int i;
 
 	value = readl(ioaddr + XGMAC_MTL_OPMODE);
 	value &= ~XGMAC_ETSALG;
@@ -156,10 +158,28 @@ static void dwxgmac2_prog_mtl_tx_algorithms(struct mac_device_info *hw,
 		value |= XGMAC_DWRR;
 		break;
 	default:
+		ets = false;
 		break;
 	}
 
 	writel(value, ioaddr + XGMAC_MTL_OPMODE);
+
+	/* Set ETS if desired */
+	for (i = 0; i < MTL_MAX_TX_QUEUES; i++) {
+		value = readl(ioaddr + XGMAC_MTL_TCx_ETS_CONTROL(i));
+		value &= ~XGMAC_TSA;
+		if (ets)
+			value |= XGMAC_ETS;
+		writel(value, ioaddr + XGMAC_MTL_TCx_ETS_CONTROL(i));
+	}
+}
+
+static void dwxgmac2_set_mtl_tx_queue_weight(struct mac_device_info *hw,
+					     u32 weight, u32 queue)
+{
+	void __iomem *ioaddr = hw->pcsr;
+
+	writel(weight, ioaddr + XGMAC_MTL_TCx_QUANTUM_WEIGHT(queue));
 }
 
 static void dwxgmac2_map_mtl_to_dma(struct mac_device_info *hw, u32 queue,
@@ -343,7 +363,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.rx_queue_routing = NULL,
 	.prog_mtl_rx_algorithms = dwxgmac2_prog_mtl_rx_algorithms,
 	.prog_mtl_tx_algorithms = dwxgmac2_prog_mtl_tx_algorithms,
-	.set_mtl_tx_queue_weight = NULL,
+	.set_mtl_tx_queue_weight = dwxgmac2_set_mtl_tx_queue_weight,
 	.map_mtl_to_dma = dwxgmac2_map_mtl_to_dma,
 	.config_cbs = dwxgmac2_config_cbs,
 	.dump_regs = NULL,
-- 
2.7.4