net: phy: Extract genphy_c45_pma_read_abilities from marvell10g

Marvell 10G PHY driver has a generic way of initializing the supported
link modes by reading the PHY's C45 PMA abilities. This can be made
generic, since these registers are part of the 802.3 specifications.

This commit extracts the config_init link_mode initialization code from
marvell10g and uses it to introduce the genphy_c45_pma_read_abilities
function.

Only PMA modes are read, it's still up to the caller to set the Pause
parameters.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 70 deletions

diff --git a/drivers/net/phy/marvell10g.c b/drivers/net/phy/marvell10g.c
index 08362dc657cd..496805c0ddfe 100644
--- a/drivers/net/phy/marvell10g.c
+++ b/drivers/net/phy/marvell10g.c
@@ -233,8 +233,7 @@ static int mv3310_resume(struct phy_device *phydev)
 
 static int mv3310_config_init(struct phy_device *phydev)
 {
-	__ETHTOOL_DECLARE_LINK_MODE_MASK(supported) = { 0, };
-	int val;
+	int ret, val;
 
 	/* Check that the PHY interface type is compatible */
 	if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
@@ -243,8 +242,8 @@ static int mv3310_config_init(struct phy_device *phydev)
 	    phydev->interface != PHY_INTERFACE_MODE_10GKR)
 		return -ENODEV;
 
-	__set_bit(ETHTOOL_LINK_MODE_Pause_BIT, supported);
-	__set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, supported);
+	__set_bit(ETHTOOL_LINK_MODE_Pause_BIT, phydev->supported);
+	__set_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, phydev->supported);
 
 	if (phydev->c45_ids.devices_in_package & MDIO_DEVS_AN) {
 		val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_STAT1);
@@ -252,74 +251,13 @@ static int mv3310_config_init(struct phy_device *phydev)
 			return val;
 
 		if (val & MDIO_AN_STAT1_ABLE)
-			__set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, supported);
+			__set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
+				  phydev->supported);
 	}
 
-	val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_STAT2);
-	if (val < 0)
-		return val;
-
-	/* Ethtool does not support the WAN mode bits */
-	if (val & (MDIO_PMA_STAT2_10GBSR | MDIO_PMA_STAT2_10GBLR |
-		   MDIO_PMA_STAT2_10GBER | MDIO_PMA_STAT2_10GBLX4 |
-		   MDIO_PMA_STAT2_10GBSW | MDIO_PMA_STAT2_10GBLW |
-		   MDIO_PMA_STAT2_10GBEW))
-		__set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, supported);
-	if (val & MDIO_PMA_STAT2_10GBSR)
-		__set_bit(ETHTOOL_LINK_MODE_10000baseSR_Full_BIT, supported);
-	if (val & MDIO_PMA_STAT2_10GBLR)
-		__set_bit(ETHTOOL_LINK_MODE_10000baseLR_Full_BIT, supported);
-	if (val & MDIO_PMA_STAT2_10GBER)
-		__set_bit(ETHTOOL_LINK_MODE_10000baseER_Full_BIT, supported);
-
-	if (val & MDIO_PMA_STAT2_EXTABLE) {
-		val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_EXTABLE);
-		if (val < 0)
-			return val;
-
-		if (val & (MDIO_PMA_EXTABLE_10GBT | MDIO_PMA_EXTABLE_1000BT |
-			   MDIO_PMA_EXTABLE_100BTX | MDIO_PMA_EXTABLE_10BT))
-			__set_bit(ETHTOOL_LINK_MODE_TP_BIT, supported);
-		if (val & MDIO_PMA_EXTABLE_10GBLRM)
-			__set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, supported);
-		if (val & (MDIO_PMA_EXTABLE_10GBKX4 | MDIO_PMA_EXTABLE_10GBKR |
-			   MDIO_PMA_EXTABLE_1000BKX))
-			__set_bit(ETHTOOL_LINK_MODE_Backplane_BIT, supported);
-		if (val & MDIO_PMA_EXTABLE_10GBLRM)
-			__set_bit(ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT,
-				  supported);
-		if (val & MDIO_PMA_EXTABLE_10GBT)
-			__set_bit(ETHTOOL_LINK_MODE_10000baseT_Full_BIT,
-				  supported);
-		if (val & MDIO_PMA_EXTABLE_10GBKX4)
-			__set_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
-				  supported);
-		if (val & MDIO_PMA_EXTABLE_10GBKR)
-			__set_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
-				  supported);
-		if (val & MDIO_PMA_EXTABLE_1000BT)
-			__set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
-				  supported);
-		if (val & MDIO_PMA_EXTABLE_1000BKX)
-			__set_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
-				  supported);
-		if (val & MDIO_PMA_EXTABLE_100BTX) {
-			__set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
-				  supported);
-			__set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
-				  supported);
-		}
-		if (val & MDIO_PMA_EXTABLE_10BT) {
-			__set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT,
-				  supported);
-			__set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT,
-				  supported);
-		}
-	}
-
-	linkmode_copy(phydev->supported, supported);
-	linkmode_and(phydev->advertising, phydev->advertising,
-		     phydev->supported);
+	ret = genphy_c45_pma_read_abilities(phydev);
+	if (ret)
+		return ret;
 
 	return 0;
 }