net: hns3: add autoneg and change speed support for fibre port

Previously, our driver only supports phydev to autoneg or change
port speed. This patch adds support for fibre port, driver gets
media speed capability and autoneg capability from firmware. If
the media supports multiple speeds, user can change port speed
with command "ethtool -s <devname> speed xxxx autoneg off duplex
full". If autoneg on, the user configuration may be overwritten
by the autoneg result.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 84 insertions, 6 deletions

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index bf7fdb875f74..23ded8a14abf 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -659,10 +659,54 @@ static int hns3_get_link_ksettings(struct net_device *netdev,
 	return 0;
 }
 
+static int hns3_check_ksettings_param(struct net_device *netdev,
+				      const struct ethtool_link_ksettings *cmd)
+{
+	struct hnae3_handle *handle = hns3_get_handle(netdev);
+	const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
+	u8 module_type = HNAE3_MODULE_TYPE_UNKNOWN;
+	u8 media_type = HNAE3_MEDIA_TYPE_UNKNOWN;
+	u8 autoneg;
+	u32 speed;
+	u8 duplex;
+	int ret;
+
+	if (ops->get_ksettings_an_result) {
+		ops->get_ksettings_an_result(handle, &autoneg, &speed, &duplex);
+		if (cmd->base.autoneg == autoneg && cmd->base.speed == speed &&
+		    cmd->base.duplex == duplex)
+			return 0;
+	}
+
+	if (ops->get_media_type)
+		ops->get_media_type(handle, &media_type, &module_type);
+
+	if (cmd->base.duplex != DUPLEX_FULL &&
+	    media_type != HNAE3_MEDIA_TYPE_COPPER) {
+		netdev_err(netdev,
+			   "only copper port supports half duplex!");
+		return -EINVAL;
+	}
+
+	if (ops->check_port_speed) {
+		ret = ops->check_port_speed(handle, cmd->base.speed);
+		if (ret) {
+			netdev_err(netdev, "unsupported speed\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
 static int hns3_set_link_ksettings(struct net_device *netdev,
 				   const struct ethtool_link_ksettings *cmd)
 {
-	/* Chip doesn't support this mode. */
+	struct hnae3_handle *handle = hns3_get_handle(netdev);
+	const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
+	int ret = 0;
+
+	/* Chip don't support this mode. */
 	if (cmd->base.speed == SPEED_1000 && cmd->base.duplex == DUPLEX_HALF)
 		return -EINVAL;
 
@@ -670,7 +714,24 @@ static int hns3_set_link_ksettings(struct net_device *netdev,
 	if (netdev->phydev)
 		return phy_ethtool_ksettings_set(netdev->phydev, cmd);
 
-	return -EOPNOTSUPP;
+	if (handle->pdev->revision == 0x20)
+		return -EOPNOTSUPP;
+
+	ret = hns3_check_ksettings_param(netdev, cmd);
+	if (ret)
+		return ret;
+
+	if (ops->set_autoneg) {
+		ret = ops->set_autoneg(handle, cmd->base.autoneg);
+		if (ret)
+			return ret;
+	}
+
+	if (ops->cfg_mac_speed_dup_h)
+		ret = ops->cfg_mac_speed_dup_h(handle, cmd->base.speed,
+					       cmd->base.duplex);
+
+	return ret;
 }
 
 static u32 hns3_get_rss_key_size(struct net_device *netdev)
@@ -875,19 +936,36 @@ static int hns3_set_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd)
 
 static int hns3_nway_reset(struct net_device *netdev)
 {
+	struct hnae3_handle *handle = hns3_get_handle(netdev);
+	const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
 	struct phy_device *phy = netdev->phydev;
+	int autoneg;
 
 	if (!netif_running(netdev))
 		return 0;
 
-	/* Only support nway_reset for netdev with phy attached for now */
-	if (!phy)
+	if (hns3_nic_resetting(netdev)) {
+		netdev_err(netdev, "dev resetting!");
+		return -EBUSY;
+	}
+
+	if (!ops->get_autoneg || !ops->restart_autoneg)
 		return -EOPNOTSUPP;
 
-	if (phy->autoneg != AUTONEG_ENABLE)
+	autoneg = ops->get_autoneg(handle);
+	if (autoneg != AUTONEG_ENABLE) {
+		netdev_err(netdev,
+			   "Autoneg is off, don't support to restart it\n");
 		return -EINVAL;
+	}
+
+	if (phy)
+		return genphy_restart_aneg(phy);
+
+	if (handle->pdev->revision == 0x20)
+		return -EOPNOTSUPP;
 
-	return genphy_restart_aneg(phy);
+	return ops->restart_autoneg(handle);
 }
 
 static void hns3_get_channels(struct net_device *netdev,