linux-kernel - [PATCH net-next 01/10] net: stmmac: dwxgmac: Enable EDMA by default

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Message-Id: <6df599b8c2d57db9d82e42861ce897d7cf003424.1561556555.git.joabreu@synopsys.com>
Date:   Wed, 26 Jun 2019 15:47:35 +0200
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc:     Jose Abreu <Jose.Abreu@...opsys.com>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>
Subject: [PATCH net-next 01/10] net: stmmac: dwxgmac: Enable EDMA by default

Enable the EDMA feature by default which gives higher performance.

Signed-off-by: Jose Abreu <joabreu@...opsys.com>
Cc: Joao Pinto <jpinto@...opsys.com>
Cc: David S. Miller <davem@...emloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>
Cc: Alexandre Torgue <alexandre.torgue@...com>
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     | 2 ++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index b8296eb41011..50b41ecb0325 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -177,6 +177,8 @@
 #define XGMAC_BLEN8			BIT(2)
 #define XGMAC_BLEN4			BIT(1)
 #define XGMAC_UNDEF			BIT(0)
+#define XGMAC_TX_EDMA_CTRL		0x00003040
+#define XGMAC_RX_EDMA_CTRL		0x00003044
 #define XGMAC_DMA_CH_CONTROL(x)		(0x00003100 + (0x80 * (x)))
 #define XGMAC_PBLx8			BIT(16)
 #define XGMAC_DMA_CH_TX_CONTROL(x)	(0x00003104 + (0x80 * (x)))
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 7861a938420a..a1ad49680c07 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -122,6 +122,8 @@ static void dwxgmac2_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi)
 	}
 
 	writel(value, ioaddr + XGMAC_DMA_SYSBUS_MODE);
+	writel(GENMASK(29, 0), ioaddr + XGMAC_TX_EDMA_CTRL);
+	writel(GENMASK(29, 0), ioaddr + XGMAC_RX_EDMA_CTRL);
 }
 
 static void dwxgmac2_dma_rx_mode(void __iomem *ioaddr, int mode,
-- 
2.7.4