1 files changed, 149 insertions, 97 deletions

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 2948d731a1c1..c581b955efb3 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -222,8 +222,35 @@ static void ocelot_port_set_pvid(struct ocelot *ocelot, int port,
 		       ANA_PORT_DROP_CFG, port);
 }
 
+static int ocelot_vlan_member_set(struct ocelot *ocelot, u32 vlan_mask, u16 vid)
+{
+	int err;
+
+	err = ocelot_vlant_set_mask(ocelot, vid, vlan_mask);
+	if (err)
+		return err;
+
+	ocelot->vlan_mask[vid] = vlan_mask;
+
+	return 0;
+}
+
+static int ocelot_vlan_member_add(struct ocelot *ocelot, int port, u16 vid)
+{
+	return ocelot_vlan_member_set(ocelot,
+				      ocelot->vlan_mask[vid] | BIT(port),
+				      vid);
+}
+
+static int ocelot_vlan_member_del(struct ocelot *ocelot, int port, u16 vid)
+{
+	return ocelot_vlan_member_set(ocelot,
+				      ocelot->vlan_mask[vid] & ~BIT(port),
+				      vid);
+}
+
 int ocelot_port_vlan_filtering(struct ocelot *ocelot, int port,
-			       bool vlan_aware)
+			       bool vlan_aware, struct netlink_ext_ack *extack)
 {
 	struct ocelot_vcap_block *block = &ocelot->block[VCAP_IS1];
 	struct ocelot_port *ocelot_port = ocelot->ports[port];
@@ -233,8 +260,8 @@ int ocelot_port_vlan_filtering(struct ocelot *ocelot, int port,
 	list_for_each_entry(filter, &block->rules, list) {
 		if (filter->ingress_port_mask & BIT(port) &&
 		    filter->action.vid_replace_ena) {
-			dev_err(ocelot->dev,
-				"Cannot change VLAN state with vlan modify rules active\n");
+			NL_SET_ERR_MSG_MOD(extack,
+					   "Cannot change VLAN state with vlan modify rules active");
 			return -EBUSY;
 		}
 	}
@@ -259,16 +286,15 @@ int ocelot_port_vlan_filtering(struct ocelot *ocelot, int port,
 EXPORT_SYMBOL(ocelot_port_vlan_filtering);
 
 int ocelot_vlan_prepare(struct ocelot *ocelot, int port, u16 vid, bool pvid,
-			bool untagged)
+			bool untagged, struct netlink_ext_ack *extack)
 {
 	struct ocelot_port *ocelot_port = ocelot->ports[port];
 
 	/* Deny changing the native VLAN, but always permit deleting it */
 	if (untagged && ocelot_port->native_vlan.vid != vid &&
 	    ocelot_port->native_vlan.valid) {
-		dev_err(ocelot->dev,
-			"Port already has a native VLAN: %d\n",
-			ocelot_port->native_vlan.vid);
+		NL_SET_ERR_MSG_MOD(extack,
+				   "Port already has a native VLAN");
 		return -EBUSY;
 	}
 
@@ -279,13 +305,11 @@ EXPORT_SYMBOL(ocelot_vlan_prepare);
 int ocelot_vlan_add(struct ocelot *ocelot, int port, u16 vid, bool pvid,
 		    bool untagged)
 {
-	int ret;
+	int err;
 
-	/* Make the port a member of the VLAN */
-	ocelot->vlan_mask[vid] |= BIT(port);
-	ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
-	if (ret)
-		return ret;
+	err = ocelot_vlan_member_add(ocelot, port, vid);
+	if (err)
+		return err;
 
 	/* Default ingress vlan classification */
 	if (pvid) {
@@ -312,13 +336,11 @@ EXPORT_SYMBOL(ocelot_vlan_add);
 int ocelot_vlan_del(struct ocelot *ocelot, int port, u16 vid)
 {
 	struct ocelot_port *ocelot_port = ocelot->ports[port];
-	int ret;
+	int err;
 
-	/* Stop the port from being a member of the vlan */
-	ocelot->vlan_mask[vid] &= ~BIT(port);
-	ret = ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
-	if (ret)
-		return ret;
+	err = ocelot_vlan_member_del(ocelot, port, vid);
+	if (err)
+		return err;
 
 	/* Ingress */
 	if (ocelot_port->pvid_vlan.vid == vid) {
@@ -340,6 +362,7 @@ EXPORT_SYMBOL(ocelot_vlan_del);
 
 static void ocelot_vlan_init(struct ocelot *ocelot)
 {
+	unsigned long all_ports = GENMASK(ocelot->num_phys_ports - 1, 0);
 	u16 port, vid;
 
 	/* Clear VLAN table, by default all ports are members of all VLANs */
@@ -348,23 +371,19 @@ static void ocelot_vlan_init(struct ocelot *ocelot)
 	ocelot_vlant_wait_for_completion(ocelot);
 
 	/* Configure the port VLAN memberships */
-	for (vid = 1; vid < VLAN_N_VID; vid++) {
-		ocelot->vlan_mask[vid] = 0;
-		ocelot_vlant_set_mask(ocelot, vid, ocelot->vlan_mask[vid]);
-	}
+	for (vid = 1; vid < VLAN_N_VID; vid++)
+		ocelot_vlan_member_set(ocelot, 0, vid);
 
 	/* Because VLAN filtering is enabled, we need VID 0 to get untagged
 	 * traffic.  It is added automatically if 8021q module is loaded, but
 	 * we can't rely on it since module may be not loaded.
 	 */
-	ocelot->vlan_mask[0] = GENMASK(ocelot->num_phys_ports - 1, 0);
-	ocelot_vlant_set_mask(ocelot, 0, ocelot->vlan_mask[0]);
+	ocelot_vlan_member_set(ocelot, all_ports, 0);
 
 	/* Set vlan ingress filter mask to all ports but the CPU port by
 	 * default.
 	 */
-	ocelot_write(ocelot, GENMASK(ocelot->num_phys_ports - 1, 0),
-		     ANA_VLANMASK);
+	ocelot_write(ocelot, all_ports, ANA_VLANMASK);
 
 	for (port = 0; port < ocelot->num_phys_ports; port++) {
 		ocelot_write_gix(ocelot, 0, REW_PORT_VLAN_CFG, port);
@@ -377,7 +396,7 @@ static u32 ocelot_read_eq_avail(struct ocelot *ocelot, int port)
 	return ocelot_read_rix(ocelot, QSYS_SW_STATUS, port);
 }
 
-int ocelot_port_flush(struct ocelot *ocelot, int port)
+static int ocelot_port_flush(struct ocelot *ocelot, int port)
 {
 	unsigned int pause_ena;
 	int err, val;
@@ -429,63 +448,118 @@ int ocelot_port_flush(struct ocelot *ocelot, int port)
 
 	return err;
 }
-EXPORT_SYMBOL(ocelot_port_flush);
 
-void ocelot_adjust_link(struct ocelot *ocelot, int port,
-			struct phy_device *phydev)
+void ocelot_phylink_mac_link_down(struct ocelot *ocelot, int port,
+				  unsigned int link_an_mode,
+				  phy_interface_t interface,
+				  unsigned long quirks)
 {
 	struct ocelot_port *ocelot_port = ocelot->ports[port];
-	int speed, mode = 0;
+	int err;
+
+	ocelot_port_rmwl(ocelot_port, 0, DEV_MAC_ENA_CFG_RX_ENA,
+			 DEV_MAC_ENA_CFG);
+
+	ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_PORT_ENA, 0);
+
+	err = ocelot_port_flush(ocelot, port);
+	if (err)
+		dev_err(ocelot->dev, "failed to flush port %d: %d\n",
+			port, err);
+
+	/* Put the port in reset. */
+	if (interface != PHY_INTERFACE_MODE_QSGMII ||
+	    !(quirks & OCELOT_QUIRK_QSGMII_PORTS_MUST_BE_UP))
+		ocelot_port_rmwl(ocelot_port,
+				 DEV_CLOCK_CFG_MAC_TX_RST |
+				 DEV_CLOCK_CFG_MAC_TX_RST,
+				 DEV_CLOCK_CFG_MAC_TX_RST |
+				 DEV_CLOCK_CFG_MAC_TX_RST,
+				 DEV_CLOCK_CFG);
+}
+EXPORT_SYMBOL_GPL(ocelot_phylink_mac_link_down);
+
+void ocelot_phylink_mac_link_up(struct ocelot *ocelot, int port,
+				struct phy_device *phydev,
+				unsigned int link_an_mode,
+				phy_interface_t interface,
+				int speed, int duplex,
+				bool tx_pause, bool rx_pause,
+				unsigned long quirks)
+{
+	struct ocelot_port *ocelot_port = ocelot->ports[port];
+	int mac_speed, mode = 0;
+	u32 mac_fc_cfg;
+
+	/* The MAC might be integrated in systems where the MAC speed is fixed
+	 * and it's the PCS who is performing the rate adaptation, so we have
+	 * to write "1000Mbps" into the LINK_SPEED field of DEV_CLOCK_CFG
+	 * (which is also its default value).
+	 */
+	if ((quirks & OCELOT_QUIRK_PCS_PERFORMS_RATE_ADAPTATION) ||
+	    speed == SPEED_1000) {
+		mac_speed = OCELOT_SPEED_1000;
+		mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
+	} else if (speed == SPEED_2500) {
+		mac_speed = OCELOT_SPEED_2500;
+		mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
+	} else if (speed == SPEED_100) {
+		mac_speed = OCELOT_SPEED_100;
+	} else {
+		mac_speed = OCELOT_SPEED_10;
+	}
 
-	switch (phydev->speed) {
+	if (duplex == DUPLEX_FULL)
+		mode |= DEV_MAC_MODE_CFG_FDX_ENA;
+
+	ocelot_port_writel(ocelot_port, mode, DEV_MAC_MODE_CFG);
+
+	/* Take port out of reset by clearing the MAC_TX_RST, MAC_RX_RST and
+	 * PORT_RST bits in DEV_CLOCK_CFG.
+	 */
+	ocelot_port_writel(ocelot_port, DEV_CLOCK_CFG_LINK_SPEED(mac_speed),
+			   DEV_CLOCK_CFG);
+
+	switch (speed) {
 	case SPEED_10:
-		speed = OCELOT_SPEED_10;
+		mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_10);
 		break;
 	case SPEED_100:
-		speed = OCELOT_SPEED_100;
+		mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_100);
 		break;
 	case SPEED_1000:
-		speed = OCELOT_SPEED_1000;
-		mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
-		break;
 	case SPEED_2500:
-		speed = OCELOT_SPEED_2500;
-		mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA;
+		mac_fc_cfg = SYS_MAC_FC_CFG_FC_LINK_SPEED(OCELOT_SPEED_1000);
 		break;
 	default:
-		dev_err(ocelot->dev, "Unsupported PHY speed on port %d: %d\n",
-			port, phydev->speed);
+		dev_err(ocelot->dev, "Unsupported speed on port %d: %d\n",
+			port, speed);
 		return;
 	}
 
-	phy_print_status(phydev);
-
-	if (!phydev->link)
-		return;
-
-	/* Only full duplex supported for now */
-	ocelot_port_writel(ocelot_port, DEV_MAC_MODE_CFG_FDX_ENA |
-			   mode, DEV_MAC_MODE_CFG);
-
-	/* Disable HDX fast control */
-	ocelot_port_writel(ocelot_port, DEV_PORT_MISC_HDX_FAST_DIS,
-			   DEV_PORT_MISC);
+	/* Handle RX pause in all cases, with 2500base-X this is used for rate
+	 * adaptation.
+	 */
+	mac_fc_cfg |= SYS_MAC_FC_CFG_RX_FC_ENA;
 
-	/* SGMII only for now */
-	ocelot_port_writel(ocelot_port, PCS1G_MODE_CFG_SGMII_MODE_ENA,
-			   PCS1G_MODE_CFG);
-	ocelot_port_writel(ocelot_port, PCS1G_SD_CFG_SD_SEL, PCS1G_SD_CFG);
+	if (tx_pause)
+		mac_fc_cfg |= SYS_MAC_FC_CFG_TX_FC_ENA |
+			      SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) |
+			      SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) |
+			      SYS_MAC_FC_CFG_ZERO_PAUSE_ENA;
 
-	/* Enable PCS */
-	ocelot_port_writel(ocelot_port, PCS1G_CFG_PCS_ENA, PCS1G_CFG);
+	/* Flow control. Link speed is only used here to evaluate the time
+	 * specification in incoming pause frames.
+	 */
+	ocelot_write_rix(ocelot, mac_fc_cfg, SYS_MAC_FC_CFG, port);
 
-	/* No aneg on SGMII */
-	ocelot_port_writel(ocelot_port, 0, PCS1G_ANEG_CFG);
+	ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port);
 
-	/* No loopback */
-	ocelot_port_writel(ocelot_port, 0, PCS1G_LB_CFG);
+	ocelot_fields_write(ocelot, port, SYS_PAUSE_CFG_PAUSE_ENA, tx_pause);
 
-	/* Enable MAC module */
+	/* Undo the effects of ocelot_phylink_mac_link_down:
+	 * enable MAC module
+	 */
 	ocelot_port_writel(ocelot_port, DEV_MAC_ENA_CFG_RX_ENA |
 			   DEV_MAC_ENA_CFG_TX_ENA, DEV_MAC_ENA_CFG);
 
@@ -502,39 +576,8 @@ void ocelot_adjust_link(struct ocelot *ocelot, int port,
 	/* Core: Enable port for frame transfer */
 	ocelot_fields_write(ocelot, port,
 			    QSYS_SWITCH_PORT_MODE_PORT_ENA, 1);
-
-	/* Flow control */
-	ocelot_write_rix(ocelot, SYS_MAC_FC_CFG_PAUSE_VAL_CFG(0xffff) |
-			 SYS_MAC_FC_CFG_RX_FC_ENA | SYS_MAC_FC_CFG_TX_FC_ENA |
-			 SYS_MAC_FC_CFG_ZERO_PAUSE_ENA |
-			 SYS_MAC_FC_CFG_FC_LATENCY_CFG(0x7) |
-			 SYS_MAC_FC_CFG_FC_LINK_SPEED(speed),
-			 SYS_MAC_FC_CFG, port);
-	ocelot_write_rix(ocelot, 0, ANA_POL_FLOWC, port);
-}
-EXPORT_SYMBOL(ocelot_adjust_link);
-
-void ocelot_port_enable(struct ocelot *ocelot, int port,
-			struct phy_device *phy)
-{
-	/* Enable receiving frames on the port, and activate auto-learning of
-	 * MAC addresses.
-	 */
-	ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO |
-			 ANA_PORT_PORT_CFG_RECV_ENA |
-			 ANA_PORT_PORT_CFG_PORTID_VAL(port),
-			 ANA_PORT_PORT_CFG, port);
 }
-EXPORT_SYMBOL(ocelot_port_enable);
-
-void ocelot_port_disable(struct ocelot *ocelot, int port)
-{
-	struct ocelot_port *ocelot_port = ocelot->ports[port];
-
-	ocelot_port_writel(ocelot_port, 0, DEV_MAC_ENA_CFG);
-	ocelot_fields_write(ocelot, port, QSYS_SWITCH_PORT_MODE_PORT_ENA, 0);
-}
-EXPORT_SYMBOL(ocelot_port_disable);
+EXPORT_SYMBOL_GPL(ocelot_phylink_mac_link_up);
 
 static void ocelot_port_add_txtstamp_skb(struct ocelot *ocelot, int port,
 					 struct sk_buff *clone)
@@ -1957,6 +2000,15 @@ void ocelot_init_port(struct ocelot *ocelot, int port)
 	/* Disable source address learning for standalone mode */
 	ocelot_port_set_learning(ocelot, port, false);
 
+	/* Set the port's initial logical port ID value, enable receiving
+	 * frames on it, and configure the MAC address learning type to
+	 * automatic.
+	 */
+	ocelot_write_gix(ocelot, ANA_PORT_PORT_CFG_LEARNAUTO |
+			 ANA_PORT_PORT_CFG_RECV_ENA |
+			 ANA_PORT_PORT_CFG_PORTID_VAL(port),
+			 ANA_PORT_PORT_CFG, port);
+
 	/* Enable vcap lookups */
 	ocelot_vcap_enable(ocelot, port);
 }