net: ethernet: ti: am65-cpsw: Convert to PHYLINK

Convert am65-cpsw driver and am65-cpsw ethtool to use Phylink APIs
as described at Documentation/networking/sfp-phylink.rst. All calls
to Phy APIs are replaced with their equivalent Phylink APIs.

No functional change intended. Use Phylink instead of conventional
Phylib, in preparation to add support for SGMII/QSGMII modes.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ti/am65-cpsw-ethtool.c b/drivers/net/ethernet/ti/am65-cpsw-ethtool.c
index d45b6bb..72acdf8 100644 (file)
--- a/drivers/net/ethernet/ti/am65-cpsw-ethtool.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-ethtool.c
@@ -6,7 +6,7 @@
  */
 
 #include <linux/net_tstamp.h>
-#include <linux/phy.h>
+#include <linux/phylink.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 
@@ -471,9 +471,7 @@ static void am65_cpsw_get_pauseparam(struct net_device *ndev,
 {
        struct am65_cpsw_slave_data *salve = am65_ndev_to_slave(ndev);
 
-       pause->autoneg = AUTONEG_DISABLE;
-       pause->rx_pause = salve->rx_pause ? true : false;
-       pause->tx_pause = salve->tx_pause ? true : false;
+       phylink_ethtool_get_pauseparam(salve->phylink, pause);
 }
 
 static int am65_cpsw_set_pauseparam(struct net_device *ndev,
@@ -481,18 +479,7 @@ static int am65_cpsw_set_pauseparam(struct net_device *ndev,
 {
        struct am65_cpsw_slave_data *salve = am65_ndev_to_slave(ndev);
 
-       if (!salve->phy)
-               return -EINVAL;
-
-       if (!phy_validate_pause(salve->phy, pause))
-               return -EINVAL;
-
-       salve->rx_pause = pause->rx_pause ? true : false;
-       salve->tx_pause = pause->tx_pause ? true : false;
-
-       phy_set_asym_pause(salve->phy, salve->rx_pause, salve->tx_pause);
-
-       return 0;
+       return phylink_ethtool_set_pauseparam(salve->phylink, pause);
 }
 
 static void am65_cpsw_get_wol(struct net_device *ndev,
@@ -500,11 +487,7 @@ static void am65_cpsw_get_wol(struct net_device *ndev,
 {
        struct am65_cpsw_slave_data *salve = am65_ndev_to_slave(ndev);
 
-       wol->supported = 0;
-       wol->wolopts = 0;
-
-       if (salve->phy)
-               phy_ethtool_get_wol(salve->phy, wol);
+       phylink_ethtool_get_wol(salve->phylink, wol);
 }
 
 static int am65_cpsw_set_wol(struct net_device *ndev,
@@ -512,10 +495,7 @@ static int am65_cpsw_set_wol(struct net_device *ndev,
 {
        struct am65_cpsw_slave_data *salve = am65_ndev_to_slave(ndev);
 
-       if (!salve->phy)
-               return -EOPNOTSUPP;
-
-       return phy_ethtool_set_wol(salve->phy, wol);
+       return phylink_ethtool_set_wol(salve->phylink, wol);
 }
 
 static int am65_cpsw_get_link_ksettings(struct net_device *ndev,
@@ -523,11 +503,7 @@ static int am65_cpsw_get_link_ksettings(struct net_device *ndev,
 {
        struct am65_cpsw_slave_data *salve = am65_ndev_to_slave(ndev);
 
-       if (!salve->phy)
-               return -EOPNOTSUPP;
-
-       phy_ethtool_ksettings_get(salve->phy, ecmd);
-       return 0;
+       return phylink_ethtool_ksettings_get(salve->phylink, ecmd);
 }
 
 static int
@@ -536,40 +512,28 @@ am65_cpsw_set_link_ksettings(struct net_device *ndev,
 {
        struct am65_cpsw_slave_data *salve = am65_ndev_to_slave(ndev);
 
-       if (!salve->phy || phy_is_pseudo_fixed_link(salve->phy))
-               return -EOPNOTSUPP;
-
-       return phy_ethtool_ksettings_set(salve->phy, ecmd);
+       return phylink_ethtool_ksettings_set(salve->phylink, ecmd);
 }
 
 static int am65_cpsw_get_eee(struct net_device *ndev, struct ethtool_eee *edata)
 {
        struct am65_cpsw_slave_data *salve = am65_ndev_to_slave(ndev);
 
-       if (!salve->phy || phy_is_pseudo_fixed_link(salve->phy))
-               return -EOPNOTSUPP;
-
-       return phy_ethtool_get_eee(salve->phy, edata);
+       return phylink_ethtool_get_eee(salve->phylink, edata);
 }
 
 static int am65_cpsw_set_eee(struct net_device *ndev, struct ethtool_eee *edata)
 {
        struct am65_cpsw_slave_data *salve = am65_ndev_to_slave(ndev);
 
-       if (!salve->phy || phy_is_pseudo_fixed_link(salve->phy))
-               return -EOPNOTSUPP;
-
-       return phy_ethtool_set_eee(salve->phy, edata);
+       return phylink_ethtool_set_eee(salve->phylink, edata);
 }
 
 static int am65_cpsw_nway_reset(struct net_device *ndev)
 {
        struct am65_cpsw_slave_data *salve = am65_ndev_to_slave(ndev);
 
-       if (!salve->phy || phy_is_pseudo_fixed_link(salve->phy))
-               return -EOPNOTSUPP;
-
-       return phy_restart_aneg(salve->phy);
+       return phylink_ethtool_nway_reset(salve->phylink);
 }
 
 static int am65_cpsw_get_regs_len(struct net_device *ndev)

diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 8251d7e..d2747e9 100644 (file)
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -18,7 +18,7 @@
 #include <linux/of_mdio.h>
 #include <linux/of_net.h>
 #include <linux/of_device.h>
-#include <linux/phy.h>
+#include <linux/phylink.h>
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
@@ -159,69 +159,6 @@ static void am65_cpsw_nuss_get_ver(struct am65_cpsw_common *common)
                common->pdata.quirks);
 }
 
-void am65_cpsw_nuss_adjust_link(struct net_device *ndev)
-{
-       struct am65_cpsw_common *common = am65_ndev_to_common(ndev);
-       struct am65_cpsw_port *port = am65_ndev_to_port(ndev);
-       struct phy_device *phy = port->slave.phy;
-       u32 mac_control = 0;
-
-       if (!phy)
-               return;
-
-       if (phy->link) {
-               mac_control = CPSW_SL_CTL_GMII_EN;
-
-               if (phy->speed == 1000)
-                       mac_control |= CPSW_SL_CTL_GIG;
-               if (phy->speed == 10 && phy_interface_is_rgmii(phy))
-                       /* Can be used with in band mode only */
-                       mac_control |= CPSW_SL_CTL_EXT_EN;
-               if (phy->speed == 100 && phy->interface == PHY_INTERFACE_MODE_RMII)
-                       mac_control |= CPSW_SL_CTL_IFCTL_A;
-               if (phy->duplex)
-                       mac_control |= CPSW_SL_CTL_FULLDUPLEX;
-
-               /* RGMII speed is 100M if !CPSW_SL_CTL_GIG*/
-
-               /* rx_pause/tx_pause */
-               if (port->slave.rx_pause)
-                       mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
-
-               if (port->slave.tx_pause)
-                       mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
-
-               cpsw_sl_ctl_set(port->slave.mac_sl, mac_control);
-
-               /* enable forwarding */
-               cpsw_ale_control_set(common->ale, port->port_id,
-                                    ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
-
-               am65_cpsw_qos_link_up(ndev, phy->speed);
-               netif_tx_wake_all_queues(ndev);
-       } else {
-               int tmo;
-
-               /* disable forwarding */
-               cpsw_ale_control_set(common->ale, port->port_id,
-                                    ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
-
-               cpsw_sl_ctl_set(port->slave.mac_sl, CPSW_SL_CTL_CMD_IDLE);
-
-               tmo = cpsw_sl_wait_for_idle(port->slave.mac_sl, 100);
-               dev_dbg(common->dev, "donw msc_sl %08x tmo %d\n",
-                       cpsw_sl_reg_read(port->slave.mac_sl, CPSW_SL_MACSTATUS),
-                       tmo);
-
-               cpsw_sl_ctl_reset(port->slave.mac_sl);
-
-               am65_cpsw_qos_link_down(ndev);
-               netif_tx_stop_all_queues(ndev);
-       }
-
-       phy_print_status(phy);
-}
-
 static int am65_cpsw_nuss_ndo_slave_add_vid(struct net_device *ndev,
                                            __be16 proto, u16 vid)
 {
@@ -589,15 +526,11 @@ static int am65_cpsw_nuss_ndo_slave_stop(struct net_device *ndev)
        struct am65_cpsw_port *port = am65_ndev_to_port(ndev);
        int ret;
 
-       if (port->slave.phy)
-               phy_stop(port->slave.phy);
+       phylink_stop(port->slave.phylink);
 
        netif_tx_stop_all_queues(ndev);
 
-       if (port->slave.phy) {
-               phy_disconnect(port->slave.phy);
-               port->slave.phy = NULL;
-       }
+       phylink_disconnect_phy(port->slave.phylink);
 
        ret = am65_cpsw_nuss_common_stop(common);
        if (ret)
@@ -667,25 +600,14 @@ static int am65_cpsw_nuss_ndo_slave_open(struct net_device *ndev)
        if (ret)
                goto error_cleanup;
 
-       if (port->slave.phy_node) {
-               port->slave.phy = of_phy_connect(ndev,
-                                                port->slave.phy_node,
-                                                &am65_cpsw_nuss_adjust_link,
-                                                0, port->slave.phy_if);
-               if (!port->slave.phy) {
-                       dev_err(common->dev, "phy %pOF not found on slave %d\n",
-                               port->slave.phy_node,
-                               port->port_id);
-                       ret = -ENODEV;
-                       goto error_cleanup;
-               }
-       }
+       ret = phylink_of_phy_connect(port->slave.phylink, port->slave.phy_node, 0);
+       if (ret)
+               goto error_cleanup;
 
        /* restore vlan configurations */
        vlan_for_each(ndev, cpsw_restore_vlans, port);
 
-       phy_attached_info(port->slave.phy);
-       phy_start(port->slave.phy);
+       phylink_start(port->slave.phylink);
 
        return 0;
 
@@ -1431,10 +1353,7 @@ static int am65_cpsw_nuss_ndo_slave_ioctl(struct net_device *ndev,
                return am65_cpsw_nuss_hwtstamp_get(ndev, req);
        }
 
-       if (!port->slave.phy)
-               return -EOPNOTSUPP;
-
-       return phy_mii_ioctl(port->slave.phy, req, cmd);
+       return phylink_mii_ioctl(port->slave.phylink, req, cmd);
 }
 
 static void am65_cpsw_nuss_ndo_get_stats(struct net_device *dev,
@@ -1494,6 +1413,81 @@ static const struct net_device_ops am65_cpsw_nuss_netdev_ops = {
        .ndo_get_devlink_port   = am65_cpsw_ndo_get_devlink_port,
 };
 
+static void am65_cpsw_nuss_mac_config(struct phylink_config *config, unsigned int mode,
+                                     const struct phylink_link_state *state)
+{
+       /* Currently not used */
+}
+
+static void am65_cpsw_nuss_mac_link_down(struct phylink_config *config, unsigned int mode,
+                                        phy_interface_t interface)
+{
+       struct am65_cpsw_slave_data *slave = container_of(config, struct am65_cpsw_slave_data,
+                                                         phylink_config);
+       struct am65_cpsw_port *port = container_of(slave, struct am65_cpsw_port, slave);
+       struct am65_cpsw_common *common = port->common;
+       struct net_device *ndev = port->ndev;
+       int tmo;
+
+       /* disable forwarding */
+       cpsw_ale_control_set(common->ale, port->port_id, ALE_PORT_STATE, ALE_PORT_STATE_DISABLE);
+
+       cpsw_sl_ctl_set(port->slave.mac_sl, CPSW_SL_CTL_CMD_IDLE);
+
+       tmo = cpsw_sl_wait_for_idle(port->slave.mac_sl, 100);
+       dev_dbg(common->dev, "down msc_sl %08x tmo %d\n",
+               cpsw_sl_reg_read(port->slave.mac_sl, CPSW_SL_MACSTATUS), tmo);
+
+       cpsw_sl_ctl_reset(port->slave.mac_sl);
+
+       am65_cpsw_qos_link_down(ndev);
+       netif_tx_stop_all_queues(ndev);
+}
+
+static void am65_cpsw_nuss_mac_link_up(struct phylink_config *config, struct phy_device *phy,
+                                      unsigned int mode, phy_interface_t interface, int speed,
+                                      int duplex, bool tx_pause, bool rx_pause)
+{
+       struct am65_cpsw_slave_data *slave = container_of(config, struct am65_cpsw_slave_data,
+                                                         phylink_config);
+       struct am65_cpsw_port *port = container_of(slave, struct am65_cpsw_port, slave);
+       struct am65_cpsw_common *common = port->common;
+       u32 mac_control = CPSW_SL_CTL_GMII_EN;
+       struct net_device *ndev = port->ndev;
+
+       if (speed == SPEED_1000)
+               mac_control |= CPSW_SL_CTL_GIG;
+       if (speed == SPEED_10 && interface == PHY_INTERFACE_MODE_RGMII)
+               /* Can be used with in band mode only */
+               mac_control |= CPSW_SL_CTL_EXT_EN;
+       if (speed == SPEED_100 && interface == PHY_INTERFACE_MODE_RMII)
+               mac_control |= CPSW_SL_CTL_IFCTL_A;
+       if (duplex)
+               mac_control |= CPSW_SL_CTL_FULLDUPLEX;
+
+       /* rx_pause/tx_pause */
+       if (rx_pause)
+               mac_control |= CPSW_SL_CTL_RX_FLOW_EN;
+
+       if (tx_pause)
+               mac_control |= CPSW_SL_CTL_TX_FLOW_EN;
+
+       cpsw_sl_ctl_set(port->slave.mac_sl, mac_control);
+
+       /* enable forwarding */
+       cpsw_ale_control_set(common->ale, port->port_id, ALE_PORT_STATE, ALE_PORT_STATE_FORWARD);
+
+       am65_cpsw_qos_link_up(ndev, speed);
+       netif_tx_wake_all_queues(ndev);
+}
+
+static const struct phylink_mac_ops am65_cpsw_phylink_mac_ops = {
+       .validate = phylink_generic_validate,
+       .mac_config = am65_cpsw_nuss_mac_config,
+       .mac_link_down = am65_cpsw_nuss_mac_link_down,
+       .mac_link_up = am65_cpsw_nuss_mac_link_up,
+};
+
 static void am65_cpsw_nuss_slave_disable_unused(struct am65_cpsw_port *port)
 {
        struct am65_cpsw_common *common = port->common;
@@ -1890,27 +1884,7 @@ static int am65_cpsw_nuss_init_slave_ports(struct am65_cpsw_common *common)
                                of_property_read_bool(port_np, "ti,mac-only");
 
                /* get phy/link info */
-               if (of_phy_is_fixed_link(port_np)) {
-                       ret = of_phy_register_fixed_link(port_np);
-                       if (ret) {
-                               ret = dev_err_probe(dev, ret,
-                                                    "failed to register fixed-link phy %pOF\n",
-                                                    port_np);
-                               goto of_node_put;
-                       }
-                       port->slave.phy_node = of_node_get(port_np);
-               } else {
-                       port->slave.phy_node =
-                               of_parse_phandle(port_np, "phy-handle", 0);
-               }
-
-               if (!port->slave.phy_node) {
-                       dev_err(dev,
-                               "slave[%d] no phy found\n", port_id);
-                       ret = -ENODEV;
-                       goto of_node_put;
-               }
-
+               port->slave.phy_node = port_np;
                ret = of_get_phy_mode(port_np, &port->slave.phy_if);
                if (ret) {
                        dev_err(dev, "%pOF read phy-mode err %d\n",
@@ -1952,12 +1926,25 @@ static void am65_cpsw_pcpu_stats_free(void *data)
        free_percpu(stats);
 }
 
+static void am65_cpsw_nuss_phylink_cleanup(struct am65_cpsw_common *common)
+{
+       struct am65_cpsw_port *port;
+       int i;
+
+       for (i = 0; i < common->port_num; i++) {
+               port = &common->ports[i];
+               if (port->slave.phylink)
+                       phylink_destroy(port->slave.phylink);
+       }
+}
+
 static int
 am65_cpsw_nuss_init_port_ndev(struct am65_cpsw_common *common, u32 port_idx)
 {
        struct am65_cpsw_ndev_priv *ndev_priv;
        struct device *dev = common->dev;
        struct am65_cpsw_port *port;
+       struct phylink *phylink;
        int ret;
 
        port = &common->ports[port_idx];
@@ -1995,6 +1982,20 @@ am65_cpsw_nuss_init_port_ndev(struct am65_cpsw_common *common, u32 port_idx)
        port->ndev->netdev_ops = &am65_cpsw_nuss_netdev_ops;
        port->ndev->ethtool_ops = &am65_cpsw_ethtool_ops_slave;
 
+       /* Configuring Phylink */
+       port->slave.phylink_config.dev = &port->ndev->dev;
+       port->slave.phylink_config.type = PHYLINK_NETDEV;
+       port->slave.phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_10 | MAC_100 | MAC_1000FD;
+
+       phy_interface_set_rgmii(port->slave.phylink_config.supported_interfaces);
+
+       phylink = phylink_create(&port->slave.phylink_config, dev->fwnode, port->slave.phy_if,
+                                &am65_cpsw_phylink_mac_ops);
+       if (IS_ERR(phylink))
+               return PTR_ERR(phylink);
+
+       port->slave.phylink = phylink;
+
        /* Disable TX checksum offload by default due to HW bug */
        if (common->pdata.quirks & AM65_CPSW_QUIRK_I2027_NO_TX_CSUM)
                port->ndev->features &= ~NETIF_F_HW_CSUM;
@@ -2761,15 +2762,17 @@ static int am65_cpsw_nuss_probe(struct platform_device *pdev)
 
        ret = am65_cpsw_nuss_init_ndevs(common);
        if (ret)
-               goto err_of_clear;
+               goto err_free_phylink;
 
        ret = am65_cpsw_nuss_register_ndevs(common);
        if (ret)
-               goto err_of_clear;
+               goto err_free_phylink;
 
        pm_runtime_put(dev);
        return 0;
 
+err_free_phylink:
+       am65_cpsw_nuss_phylink_cleanup(common);
 err_of_clear:
        of_platform_device_destroy(common->mdio_dev, NULL);
 err_pm_clear:
@@ -2792,6 +2795,7 @@ static int am65_cpsw_nuss_remove(struct platform_device *pdev)
                return ret;
        }
 
+       am65_cpsw_nuss_phylink_cleanup(common);
        am65_cpsw_unregister_devlink(common);
        am65_cpsw_unregister_notifiers(common);
 

diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.h b/drivers/net/ethernet/ti/am65-cpsw-nuss.h
index 048ed10..ac94563 100644 (file)
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.h
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.h
@@ -10,7 +10,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/netdevice.h>
-#include <linux/phy.h>
+#include <linux/phylink.h>
 #include <linux/platform_device.h>
 #include <linux/soc/ti/k3-ringacc.h>
 #include <net/devlink.h>
@@ -30,13 +30,14 @@ struct am65_cpsw_slave_data {
        bool                            mac_only;
        struct cpsw_sl                  *mac_sl;
        struct device_node              *phy_node;
-       struct phy_device               *phy;
        phy_interface_t                 phy_if;
        struct phy                      *ifphy;
        bool                            rx_pause;
        bool                            tx_pause;
        u8                              mac_addr[ETH_ALEN];
        int                             port_vlan;
+       struct phylink                  *phylink;
+       struct phylink_config           phylink_config;
 };
 
 struct am65_cpsw_port {