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From: Jose Abreu <Jose.Abreu@synopsys.com>
To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Cc: Jose Abreu <Jose.Abreu@synopsys.com>,
	Joao Pinto <Joao.Pinto@synopsys.com>,
	"David S . Miller" <davem@davemloft.net>,
	Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	Alexandre Torgue <alexandre.torgue@st.com>
Subject: [PATCH net-next v2 05/18] net: stmmac: dwxgmac2: Add MAC loopback support
Date: Fri, 24 May 2019 10:20:13 +0200	[thread overview]
Message-ID: <88f1b7496b6ecfc4dc6e31a588105a33e71662a8.1558685827.git.joabreu@synopsys.com> (raw)
In-Reply-To: <cover.1558685827.git.joabreu@synopsys.com>
In-Reply-To: <cover.1558685827.git.joabreu@synopsys.com>

In preparation for the addition of stmmac selftests we implement the MAC
loopback callback in dwxgmac2 core.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h      |  1 +
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 085b700a4994..f629ccc8932a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -29,6 +29,7 @@
 #define XGMAC_CONFIG_GPSL		GENMASK(29, 16)
 #define XGMAC_CONFIG_GPSL_SHIFT		16
 #define XGMAC_CONFIG_S2KP		BIT(11)
+#define XGMAC_CONFIG_LM			BIT(10)
 #define XGMAC_CONFIG_IPC		BIT(9)
 #define XGMAC_CONFIG_JE			BIT(8)
 #define XGMAC_CONFIG_WD			BIT(7)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 64b8cb88ea45..c27b3ca052ea 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -321,6 +321,18 @@ static void dwxgmac2_set_filter(struct mac_device_info *hw,
 	writel(value, ioaddr + XGMAC_PACKET_FILTER);
 }
 
+static void dwxgmac2_set_mac_loopback(void __iomem *ioaddr, bool enable)
+{
+	u32 value = readl(ioaddr + XGMAC_RX_CONFIG);
+
+	if (enable)
+		value |= XGMAC_CONFIG_LM;
+	else
+		value &= ~XGMAC_CONFIG_LM;
+
+	writel(value, ioaddr + XGMAC_RX_CONFIG);
+}
+
 const struct stmmac_ops dwxgmac210_ops = {
 	.core_init = dwxgmac2_core_init,
 	.set_mac = dwxgmac2_set_mac,
@@ -350,6 +362,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.pcs_get_adv_lp = NULL,
 	.debug = NULL,
 	.set_filter = dwxgmac2_set_filter,
+	.set_mac_loopback = dwxgmac2_set_mac_loopback,
 };
 
 int dwxgmac2_setup(struct stmmac_priv *priv)
-- 
2.7.4


  parent reply	other threads:[~2019-05-24  8:22 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-24  8:20 [PATCH net-next v2 00/18] net: stmmac: Improvements and Selftests Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 01/18] net: stmmac: Add MAC loopback callback to HWIF Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 02/18] net: stmmac: dwmac100: Add MAC loopback support Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 03/18] net: stmmac: dwmac1000: " Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 04/18] net: stmmac: dwmac4/5: " Jose Abreu
2019-05-24  8:20 ` Jose Abreu [this message]
2019-05-24  8:20 ` [PATCH net-next v2 06/18] net: ethernet: stmmac: dwmac-sun8i: Enable control of loopback Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 07/18] net: stmmac: Switch MMC functions to HWIF callbacks Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 08/18] net: stmmac: dwmac1000: Also pass control frames while in promisc mode Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 09/18] net: stmmac: dwmac4/5: " Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 10/18] net: stmmac: dwxgmac2: " Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 11/18] net: stmmac: Introduce selftests support Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 12/18] net: stmmac: dwmac1000: Fix Hash Filter Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 13/18] net: stmmac: dwmac1000: Clear unused address entries Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 14/18] net: stmmac: dwmac4/5: Fix Hash Filter Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 15/18] net: stmmac: dwmac4/5: Do not disable whole RX in dma_stop_rx() Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 16/18] net: stmmac: dwxgmac2: " Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 17/18] net: stmmac: dwmac4/5: Clear unused address entries Jose Abreu
2019-05-24  8:20 ` [PATCH net-next v2 18/18] net: stmmac: Prevent missing interrupts when running NAPI Jose Abreu
2019-05-24 20:46 ` [PATCH net-next v2 00/18] net: stmmac: Improvements and Selftests David Miller

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