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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 04/18] net: stmmac: dwmac4/5: Add MAC loopback support
Date: Fri, 24 May 2019 10:20:12 +0200	[thread overview]
Message-ID: <c244efd73eabc6b8ff87558d10cf63705e3d6982.1558685827.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 dwmac4/5 cores.

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/dwmac4.h      |  1 +
 drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 15 +++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
index eb013d54025a..3dddd7902b0f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
@@ -160,6 +160,7 @@ enum power_event {
 #define GMAC_CONFIG_PS			BIT(15)
 #define GMAC_CONFIG_FES			BIT(14)
 #define GMAC_CONFIG_DM			BIT(13)
+#define GMAC_CONFIG_LM			BIT(12)
 #define GMAC_CONFIG_DCRS		BIT(9)
 #define GMAC_CONFIG_TE			BIT(1)
 #define GMAC_CONFIG_RE			BIT(0)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index b4bb5629de38..45c294f39ea6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -703,6 +703,18 @@ static void dwmac4_debug(void __iomem *ioaddr, struct stmmac_extra_stats *x,
 		x->mac_gmii_rx_proto_engine++;
 }
 
+static void dwmac4_set_mac_loopback(void __iomem *ioaddr, bool enable)
+{
+	u32 value = readl(ioaddr + GMAC_CONFIG);
+
+	if (enable)
+		value |= GMAC_CONFIG_LM;
+	else
+		value &= ~GMAC_CONFIG_LM;
+
+	writel(value, ioaddr + GMAC_CONFIG);
+}
+
 const struct stmmac_ops dwmac4_ops = {
 	.core_init = dwmac4_core_init,
 	.set_mac = stmmac_set_mac,
@@ -732,6 +744,7 @@ const struct stmmac_ops dwmac4_ops = {
 	.pcs_get_adv_lp = dwmac4_get_adv_lp,
 	.debug = dwmac4_debug,
 	.set_filter = dwmac4_set_filter,
+	.set_mac_loopback = dwmac4_set_mac_loopback,
 };
 
 const struct stmmac_ops dwmac410_ops = {
@@ -763,6 +776,7 @@ const struct stmmac_ops dwmac410_ops = {
 	.pcs_get_adv_lp = dwmac4_get_adv_lp,
 	.debug = dwmac4_debug,
 	.set_filter = dwmac4_set_filter,
+	.set_mac_loopback = dwmac4_set_mac_loopback,
 };
 
 const struct stmmac_ops dwmac510_ops = {
@@ -799,6 +813,7 @@ const struct stmmac_ops dwmac510_ops = {
 	.safety_feat_dump = dwmac5_safety_feat_dump,
 	.rxp_config = dwmac5_rxp_config,
 	.flex_pps_config = dwmac5_flex_pps_config,
+	.set_mac_loopback = dwmac4_set_mac_loopback,
 };
 
 int dwmac4_setup(struct stmmac_priv *priv)
-- 
2.7.4


  parent reply	other threads:[~2019-05-24  8:21 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 ` Jose Abreu [this message]
2019-05-24  8:20 ` [PATCH net-next v2 05/18] net: stmmac: dwxgmac2: " Jose Abreu
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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