net: hns: Use phy_driver to setup Phy loopback

Use function set_loopback in phy_driver to setup phy loopback
when doing ethtool self test.
Signed-off-by: Lin Yun Sheng <linyunsheng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns/hnae.h

@@ -360,6 +360,7 @@ enum hnae_loop {
 	MAC_INTERNALLOOP_MAC = 0,
 	MAC_INTERNALLOOP_SERDES,
 	MAC_INTERNALLOOP_PHY,
+	MAC_LOOP_PHY_NONE,
 	MAC_LOOP_NONE,
 };
 

drivers/net/ethernet/hisilicon/hns/hns_ethtool.c

@@ -259,67 +259,27 @@ static const char hns_nic_test_strs[][ETH_GSTRING_LEN] = {
 
 static int hns_nic_config_phy_loopback(struct phy_device *phy_dev, u8 en)
 {
-#define COPPER_CONTROL_REG 0
-#define PHY_POWER_DOWN BIT(11)
-#define PHY_LOOP_BACK BIT(14)
-	u16 val = 0;
-
-	if (phy_dev->is_c45) /* c45 branch adding for XGE PHY */
-		return -ENOTSUPP;
+	int err;
 
 	if (en) {
-		/* speed : 1000M */
-		phy_write(phy_dev, HNS_PHY_PAGE_REG, 2);
-		phy_write(phy_dev, 21, 0x1046);
-
-		phy_write(phy_dev, HNS_PHY_PAGE_REG, 0);
-		/* Force Master */
-		phy_write(phy_dev, 9, 0x1F00);
-
-		/* Soft-reset */
-		phy_write(phy_dev, 0, 0x9140);
-		/* If autoneg disabled,two soft-reset operations */
-		phy_write(phy_dev, 0, 0x9140);
-
-		phy_write(phy_dev, HNS_PHY_PAGE_REG, 0xFA);
-
-		/* Default is 0x0400 */
-		phy_write(phy_dev, 1, 0x418);
-
-		/* Force 1000M Link, Default is 0x0200 */
-		phy_write(phy_dev, 7, 0x20C);
-
-		/* Powerup Fiber */
-		phy_write(phy_dev, HNS_PHY_PAGE_REG, 1);
-		val = phy_read(phy_dev, COPPER_CONTROL_REG);
-		val &= ~PHY_POWER_DOWN;
-		phy_write(phy_dev, COPPER_CONTROL_REG, val);
-
-		/* Enable Phy Loopback */
-		phy_write(phy_dev, HNS_PHY_PAGE_REG, 0);
-		val = phy_read(phy_dev, COPPER_CONTROL_REG);
-		val |= PHY_LOOP_BACK;
-		val &= ~PHY_POWER_DOWN;
-		phy_write(phy_dev, COPPER_CONTROL_REG, val);
+		/* Doing phy loopback in offline state, phy resuming is
+		 * needed to power up the device.
+		 */
+		err = phy_resume(phy_dev);
+		if (err)
+			goto out;
+
+		err = phy_loopback(phy_dev, true);
 	} else {
-		phy_write(phy_dev, HNS_PHY_PAGE_REG, 0xFA);
-		phy_write(phy_dev, 1, 0x400);
-		phy_write(phy_dev, 7, 0x200);
-
-		phy_write(phy_dev, HNS_PHY_PAGE_REG, 1);
-		val = phy_read(phy_dev, COPPER_CONTROL_REG);
-		val |= PHY_POWER_DOWN;
-		phy_write(phy_dev, COPPER_CONTROL_REG, val);
-
-		phy_write(phy_dev, HNS_PHY_PAGE_REG, 0);
-		phy_write(phy_dev, 9, 0xF00);
-
-		val = phy_read(phy_dev, COPPER_CONTROL_REG);
-		val &= ~PHY_LOOP_BACK;
-		val |= PHY_POWER_DOWN;
-		phy_write(phy_dev, COPPER_CONTROL_REG, val);
+		err = phy_loopback(phy_dev, false);
+		if (err)
+			goto out;
+
+		err = phy_suspend(phy_dev);
 	}
-	return 0;
+
+out:
+	return err;
 }
 
 static int __lb_setup(struct net_device *ndev,
@@ -332,10 +292,9 @@ static int __lb_setup(struct net_device *ndev,
 
 	switch (loop) {
 	case MAC_INTERNALLOOP_PHY:
-		if ((phy_dev) && (!phy_dev->is_c45)) {
-			ret = hns_nic_config_phy_loopback(phy_dev, 0x1);
-			ret |= h->dev->ops->set_loopback(h, loop, 0x1);
-		}
+		ret = hns_nic_config_phy_loopback(phy_dev, 0x1);
+		if (!ret)
+			ret = h->dev->ops->set_loopback(h, loop, 0x1);
 		break;
 	case MAC_INTERNALLOOP_MAC:
 		if ((h->dev->ops->set_loopback) &&
@@ -346,17 +305,17 @@ static int __lb_setup(struct net_device *ndev,
 		if (h->dev->ops->set_loopback)
 			ret = h->dev->ops->set_loopback(h, loop, 0x1);
 		break;
+	case MAC_LOOP_PHY_NONE:
+		ret = hns_nic_config_phy_loopback(phy_dev, 0x0);
 	case MAC_LOOP_NONE:
-		if ((phy_dev) && (!phy_dev->is_c45))
-			ret |= hns_nic_config_phy_loopback(phy_dev, 0x0);
-
-		if (h->dev->ops->set_loopback) {
+		if (!ret && h->dev->ops->set_loopback) {
 			if (priv->ae_handle->phy_if != PHY_INTERFACE_MODE_XGMII)
-				ret |= h->dev->ops->set_loopback(h,
+				ret = h->dev->ops->set_loopback(h,
 					MAC_INTERNALLOOP_MAC, 0x0);
 
-			ret |= h->dev->ops->set_loopback(h,
-				MAC_INTERNALLOOP_SERDES, 0x0);
+			if (!ret)
+				ret = h->dev->ops->set_loopback(h,
+					MAC_INTERNALLOOP_SERDES, 0x0);
 		}
 		break;
 	default:
@@ -582,13 +541,16 @@ static int __lb_run_test(struct net_device *ndev,
 	return ret_val;
 }
 
-static int __lb_down(struct net_device *ndev)
+static int __lb_down(struct net_device *ndev, enum hnae_loop loop)
 {
 	struct hns_nic_priv *priv = netdev_priv(ndev);
 	struct hnae_handle *h = priv->ae_handle;
 	int ret;
 
-	ret = __lb_setup(ndev, MAC_LOOP_NONE);
+	if (loop == MAC_INTERNALLOOP_PHY)
+		ret = __lb_setup(ndev, MAC_LOOP_PHY_NONE);
+	else
+		ret = __lb_setup(ndev, MAC_LOOP_NONE);
 	if (ret)
 		netdev_err(ndev, "%s: __lb_setup return error(%d)!\n",
 			   __func__,
@@ -644,7 +606,8 @@ static void hns_nic_self_test(struct net_device *ndev,
 			if (!data[test_index]) {
 				data[test_index] = __lb_run_test(
 					ndev, (enum hnae_loop)st_param[i][0]);
-				(void)__lb_down(ndev);
+				(void)__lb_down(ndev,
+						(enum hnae_loop)st_param[i][0]);
 			}
 
 			if (data[test_index])