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From: Russell King <rmk+kernel@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Heiner Kallweit <hkallweit1@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>, netdev@vger.kernel.org
Subject: [PATCH net-next 5/5] net: phylink: pcs: add 802.3 clause 45 helpers
Date: Wed, 11 Mar 2020 12:07:41 +0000	[thread overview]
Message-ID: <E1jC09F-0001cg-0l@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <20200311120643.GN25745@shell.armlinux.org.uk>

Implement helpers for PCS accessed via the MII bus using 802.3 clause
45 cycles for 10GBASE-R. Only link up/down is supported, 10G full
duplex is assumed.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 drivers/net/phy/phylink.c | 30 ++++++++++++++++++++++++++++++
 include/linux/phylink.h   |  2 ++
 2 files changed, 32 insertions(+)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 3ef20b34f5d6..b83236b4d10a 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -2241,4 +2241,34 @@ void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs)
 }
 EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_an_restart);
 
+#define C45_ADDR(d,a)	(MII_ADDR_C45 | (d) << 16 | (a))
+void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,
+				   struct phylink_link_state *state)
+{
+	struct mii_bus *bus = pcs->bus;
+	int addr = pcs->addr;
+	int stat;
+
+	stat = mdiobus_read(bus, addr, C45_ADDR(MDIO_MMD_PCS, MDIO_STAT1));
+	if (stat < 0) {
+		state->link = false;
+		return;
+	}
+
+	state->link = !!(stat & MDIO_STAT1_LSTATUS);
+	if (!state->link)
+		return;
+
+	switch (state->interface) {
+	case PHY_INTERFACE_MODE_10GBASER:
+		state->speed = SPEED_10000;
+		state->duplex = DUPLEX_FULL;
+		break;
+
+	default:
+		break;
+	}
+}
+EXPORT_SYMBOL_GPL(phylink_mii_c45_pcs_get_state);
+
 MODULE_LICENSE("GPL v2");
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index de591c2fb37e..8fa6df3b881b 100644
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -323,4 +323,6 @@ int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs,
 					const struct phylink_link_state *state);
 void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs);
 
+void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,
+				   struct phylink_link_state *state);
 #endif
-- 
2.20.1


  parent reply	other threads:[~2020-03-11 12:07 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11 12:06 [PATCH net-next 0/5] add phylink support for PCS Russell King - ARM Linux admin
2020-03-11 12:07 ` [PATCH net-next 1/5] net: mii: convert mii_lpa_to_ethtool_lpa_x() to linkmode variant Russell King
2020-03-11 12:07 ` [PATCH net-next 2/5] net: mii: add linkmode_adv_to_mii_adv_x() Russell King
2020-03-11 12:07 ` [PATCH net-next 3/5] net: mdiobus: add APIs for modifying a MDIO device register Russell King
2020-03-11 12:07 ` [PATCH net-next 4/5] net: phylink: pcs: add 802.3 clause 22 helpers Russell King
2020-03-11 14:06   ` Vladimir Oltean
2020-03-11 17:09     ` Russell King - ARM Linux admin
2020-03-11 18:44       ` Vladimir Oltean
2020-03-11 19:32         ` Russell King - ARM Linux admin
2020-03-11 19:59           ` Vladimir Oltean
2020-03-11 20:32             ` Russell King - ARM Linux admin
2020-03-12 12:54               ` Vladimir Oltean
2020-03-12 13:13                 ` Russell King - ARM Linux admin
2020-03-12 13:35                   ` Vladimir Oltean
2020-03-11 12:07 ` Russell King [this message]
2020-03-11 12:46 ` [PATCH net-next 0/5] add phylink support for PCS Vladimir Oltean
2020-03-11 12:54   ` Russell King - ARM Linux admin
2020-03-11 13:57     ` Vladimir Oltean
2020-03-11 17:05       ` Russell King - ARM Linux admin
2020-03-11 18:16         ` Vladimir Oltean

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