netdev - [PATCH v1 1/2] net: phy: add the link modes for 1000BASE-T1 Ethernet PHY

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Date: Mon,  3 Jul 2023 14:44:39 +0200
From: Stefan Eichenberger <eichest@...il.com>
To: netdev@...r.kernel.org,
	andrew@...n.ch,
	hkallweit1@...il.com,
	linux@...linux.org.uk
Cc: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	francesco.dolcini@...adex.com
Subject: [PATCH v1 1/2] net: phy: add the link modes for 1000BASE-T1 Ethernet PHY

This patch adds the link modes for the 1000BASE-T1 Ethernet PHYs. It
supports 100BASE-T1/1000BASE-T1 in full duplex mode. So far I could not
find a 1000BASE-T1 PHY that also supports 10BASE-T1, so this mode is not
added.

Signed-off-by: Stefan Eichenberger <eichest@...il.com>
---
 drivers/net/phy/phy_device.c | 14 ++++++++++++++
 include/linux/phy.h          |  2 ++
 2 files changed, 16 insertions(+)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 17d0d0555a79f..4492dbd525f4f 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -50,6 +50,9 @@ EXPORT_SYMBOL_GPL(phy_basic_t1_features);
 __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1s_p2mp_features) __ro_after_init;
 EXPORT_SYMBOL_GPL(phy_basic_t1s_p2mp_features);
 
+__ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_t1_features) __ro_after_init;
+EXPORT_SYMBOL_GPL(phy_gbit_t1_features);
+
 __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_features) __ro_after_init;
 EXPORT_SYMBOL_GPL(phy_gbit_features);
 
@@ -109,6 +112,13 @@ const int phy_basic_t1s_p2mp_features_array[2] = {
 };
 EXPORT_SYMBOL_GPL(phy_basic_t1s_p2mp_features_array);
 
+const int phy_gbit_t1_features_array[3] = {
+	ETHTOOL_LINK_MODE_TP_BIT,
+	ETHTOOL_LINK_MODE_100baseT1_Full_BIT,
+	ETHTOOL_LINK_MODE_1000baseT1_Full_BIT,
+};
+EXPORT_SYMBOL_GPL(phy_gbit_t1_features_array);
+
 const int phy_gbit_features_array[2] = {
 	ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
 	ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
@@ -165,6 +175,10 @@ static void features_init(void)
 	linkmode_set_bit_array(phy_basic_t1s_p2mp_features_array,
 			       ARRAY_SIZE(phy_basic_t1s_p2mp_features_array),
 			       phy_basic_t1s_p2mp_features);
+	/* 1000 full, TP */
+	linkmode_set_bit_array(phy_gbit_t1_features_array,
+			       ARRAY_SIZE(phy_gbit_t1_features_array),
+			       phy_gbit_t1_features);
 
 	/* 10/100 half/full + 1000 half/full */
 	linkmode_set_bit_array(phy_basic_ports_array,
diff --git a/include/linux/phy.h b/include/linux/phy.h
index c5a0dc829714f..81b6731a85a86 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -47,6 +47,7 @@
 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_features) __ro_after_init;
 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1_features) __ro_after_init;
 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_basic_t1s_p2mp_features) __ro_after_init;
+extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_t1_features) __ro_after_init;
 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_features) __ro_after_init;
 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_fibre_features) __ro_after_init;
 extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_gbit_all_ports_features) __ro_after_init;
@@ -58,6 +59,7 @@ extern __ETHTOOL_DECLARE_LINK_MODE_MASK(phy_eee_cap1_features) __ro_after_init;
 #define PHY_BASIC_FEATURES ((unsigned long *)&phy_basic_features)
 #define PHY_BASIC_T1_FEATURES ((unsigned long *)&phy_basic_t1_features)
 #define PHY_BASIC_T1S_P2MP_FEATURES ((unsigned long *)&phy_basic_t1s_p2mp_features)
+#define PHY_GBIT_T1_FEATURES ((unsigned long *)&phy_gbit_t1_features)
 #define PHY_GBIT_FEATURES ((unsigned long *)&phy_gbit_features)
 #define PHY_GBIT_FIBRE_FEATURES ((unsigned long *)&phy_gbit_fibre_features)
 #define PHY_GBIT_ALL_PORTS_FEATURES ((unsigned long *)&phy_gbit_all_ports_features)
-- 
2.39.2