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[net-next,v2,05/10] net: mvpp2: initialize the XLG MAC when using a port

Message ID 20170822170830.32413-6-antoine.tenart@free-electrons.com (mailing list archive)
State New, archived
Headers show

Commit Message

Antoine Tenart Aug. 22, 2017, 5:08 p.m. UTC 
This adds a routine to initialize the XLG MAC at the port level when
using a port and the XAUI/10GKR interface mode. This wasn't done until
this commit, and the mvpp2 driver was relying on the bootloader/firmware
initialization. This doesn't mean everything is configured in the mvpp2
driver now, but it helps reducing the gap.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Tested-by: Marcin Wojtas <mw@semihalf.com>
---
 drivers/net/ethernet/marvell/mvpp2.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
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Patch

diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
index 2ab7366ac90f..64e0a1bae7d0 100644
--- a/drivers/net/ethernet/marvell/mvpp2.c
+++ b/drivers/net/ethernet/marvell/mvpp2.c
@@ -361,6 +361,7 @@ 
 #define MVPP22_XLG_CTRL0_REG			0x100
 #define     MVPP22_XLG_CTRL0_PORT_EN		BIT(0)
 #define     MVPP22_XLG_CTRL0_MAC_RESET_DIS	BIT(1)
+#define     MVPP22_XLG_CTRL0_RX_FLOW_CTRL_EN	BIT(7)
 #define     MVPP22_XLG_CTRL0_MIB_CNT_DIS	BIT(14)
 
 #define MVPP22_XLG_CTRL3_REG			0x11c
@@ -368,6 +369,11 @@ 
 #define     MVPP22_XLG_CTRL3_MACMODESELECT_GMAC	(0 << 13)
 #define     MVPP22_XLG_CTRL3_MACMODESELECT_10G	(1 << 13)
 
+#define MVPP22_XLG_CTRL4_REG			0x184
+#define     MVPP22_XLG_CTRL4_FWD_FC		BIT(5)
+#define     MVPP22_XLG_CTRL4_FWD_PFC		BIT(6)
+#define     MVPP22_XLG_CTRL4_MACMODSELECT_GMAC	BIT(12)
+
 /* SMI registers. PPv2.2 only, relative to priv->iface_base. */
 #define MVPP22_SMI_MISC_CFG_REG			0x1204
 #define     MVPP22_SMI_POLLING_EN		BIT(10)
@@ -4337,6 +4343,23 @@  static void mvpp2_port_mii_gmac_configure(struct mvpp2_port *port)
 	writel(val, port->base + MVPP2_GMAC_AUTONEG_CONFIG);
 }
 
+static void mvpp2_port_mii_xlg_configure(struct mvpp2_port *port)
+{
+	u32 val;
+
+	if (port->gop_id != 0)
+		return;
+
+	val = readl(port->base + MVPP22_XLG_CTRL0_REG);
+	val |= MVPP22_XLG_CTRL0_RX_FLOW_CTRL_EN;
+	writel(val, port->base + MVPP22_XLG_CTRL0_REG);
+
+	val = readl(port->base + MVPP22_XLG_CTRL4_REG);
+	val &= ~MVPP22_XLG_CTRL4_MACMODSELECT_GMAC;
+	val |= MVPP22_XLG_CTRL4_FWD_FC | MVPP22_XLG_CTRL4_FWD_PFC;
+	writel(val, port->base + MVPP22_XLG_CTRL4_REG);
+}
+
 static void mvpp22_port_mii_set(struct mvpp2_port *port)
 {
 	u32 val;
@@ -4367,6 +4390,8 @@  static void mvpp2_port_mii_set(struct mvpp2_port *port)
 	    port->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID ||
 	    port->phy_interface == PHY_INTERFACE_MODE_SGMII)
 		mvpp2_port_mii_gmac_configure(port);
+	else if (port->phy_interface == PHY_INTERFACE_MODE_10GKR)
+		mvpp2_port_mii_xlg_configure(port);
 }
 
 static void mvpp2_port_fc_adv_enable(struct mvpp2_port *port)