Thread (9 messages) flat view 9 messages, 4 authors, 2022-02-25
STALE1665d REVIEWED: 4 (4M)

1 review trailer (1 from subsystem maintainers).

[PATCH net-next 5/6] net: dsa: sja1105: convert to phylink_generic_validate()

From: Russell King (Oracle) <hidden>
Date: 2022-02-25 12:00:31
Subsystem: networking drivers, networking [dsa], the rest · Maintainers: Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Andrew Lunn, Vladimir Oltean, Linus Torvalds

Populate the MAC capabilities for the SJA1105 DSA switch using the same
decision making which sja1105_phylink_validate() uses. Remove the now
obsolete sja1105_phylink_validate() implementation to allow DSA to use
phylink_generic_validate() for this switch driver.

As noted by Vladimir, this fixes an inconsequential bug which allowed
gigabit and lower interface modes to be indicated when operating in
2500base-X mode.

Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Russell King (Oracle) <redacted>
---
 drivers/net/dsa/sja1105/sja1105_main.c | 35 ++++++--------------------
 1 file changed, 7 insertions(+), 28 deletions(-)
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 8f061cce77f0..5beef06d8ff7 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -1395,6 +1395,7 @@ static void sja1105_phylink_get_caps(struct dsa_switch *ds, int port,
 				     struct phylink_config *config)
 {
 	struct sja1105_private *priv = ds->priv;
+	struct sja1105_xmii_params_entry *mii;
 
 	/* This driver does not make use of the speed, duplex, pause or the
 	 * advertisement in its mac_config, so it is safe to mark this driver
@@ -1407,40 +1408,19 @@ static void sja1105_phylink_get_caps(struct dsa_switch *ds, int port,
 	 * we have to program that early.
 	 */
 	__set_bit(priv->phy_mode[port], config->supported_interfaces);
-}
-
-static void sja1105_phylink_validate(struct dsa_switch *ds, int port,
-				     unsigned long *supported,
-				     struct phylink_link_state *state)
-{
-	/* Construct a new mask which exhaustively contains all link features
-	 * supported by the MAC, and then apply that (logical AND) to what will
-	 * be sent to the PHY for "marketing".
-	 */
-	__ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
-	struct sja1105_private *priv = ds->priv;
-	struct sja1105_xmii_params_entry *mii;
-
-	mii = priv->static_config.tables[BLK_IDX_XMII_PARAMS].entries;
 
 	/* The MAC does not support pause frames, and also doesn't
 	 * support half-duplex traffic modes.
 	 */
-	phylink_set(mask, Autoneg);
-	phylink_set(mask, MII);
-	phylink_set(mask, 10baseT_Full);
-	phylink_set(mask, 100baseT_Full);
-	phylink_set(mask, 100baseT1_Full);
+	config->mac_capabilities = MAC_10FD | MAC_100FD;
+
+	mii = priv->static_config.tables[BLK_IDX_XMII_PARAMS].entries;
 	if (mii->xmii_mode[port] == XMII_MODE_RGMII ||
 	    mii->xmii_mode[port] == XMII_MODE_SGMII)
-		phylink_set(mask, 1000baseT_Full);
-	if (priv->info->supports_2500basex[port]) {
-		phylink_set(mask, 2500baseT_Full);
-		phylink_set(mask, 2500baseX_Full);
-	}
+		config->mac_capabilities |= MAC_1000FD;
 
-	linkmode_and(supported, supported, mask);
-	linkmode_and(state->advertising, state->advertising, mask);
+	if (priv->info->supports_2500basex[port])
+		config->mac_capabilities |= MAC_2500FD;
 }
 
 static int
@@ -3140,7 +3120,6 @@ static const struct dsa_switch_ops sja1105_switch_ops = {
 	.port_change_mtu	= sja1105_change_mtu,
 	.port_max_mtu		= sja1105_get_max_mtu,
 	.phylink_get_caps	= sja1105_phylink_get_caps,
-	.phylink_validate	= sja1105_phylink_validate,
 	.phylink_mac_select_pcs	= sja1105_mac_select_pcs,
 	.phylink_mac_link_up	= sja1105_mac_link_up,
 	.phylink_mac_link_down	= sja1105_mac_link_down,
-- 
2.30.2
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