[PATCH net-next 04/26] net: stmmac: xgmac: Implement set_mtl_tx_queue_weight()

From: Jose Abreu <Jose.Abreu@synopsys.com>
To: netdev@vger.kernel.org
Cc: Joao Pinto <Joao.Pinto@synopsys.com>,
	Jose Abreu <Jose.Abreu@synopsys.com>,
	Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	Alexandre Torgue <alexandre.torgue@st.com>,
	"David S. Miller" <davem@davemloft.net>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH net-next 04/26] net: stmmac: xgmac: Implement set_mtl_tx_queue_weight()
Date: Mon,  5 Aug 2019 18:44:31 +0200	[thread overview]
Message-ID: <3954867cf30aebcc0a86e83b61da48ef32bf645e.1565022597.git.joabreu@synopsys.com> (raw)
In-Reply-To: <cover.1565022597.git.joabreu@synopsys.com>
In-Reply-To: <cover.1565022597.git.joabreu@synopsys.com>

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@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 .../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 85c68b7ee8c6..ce6503dfc86d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -144,7 +144,9 @@ 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;
@@ -160,10 +162,28 @@ 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,
@@ -412,7 +432,7 @@ 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

