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Date: Sun, 2 Sep 2018 19:06:36 +0200
From: Andrew Lunn <andrew@...n.ch>
To: David Miller <davem@...emloft.net>
Cc: netdev <netdev@...r.kernel.org>,
Florian Fainelli <f.fainelli@...il.com>,
maxime.chevallier@...tlin.com, Andrew Lunn <andrew@...n.ch>
Subject: [PATCH net-next 07/12] net: ethernet: Add helper to remove a supported link mode
Some MAC hardware cannot support a subset of link modes. e.g. often
1Gbps Full duplex is supported, but Half duplex is not. Add a helper
to remove such a link mode.
Signed-off-by: Andrew Lunn <andrew@...n.ch>
---
drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | 6 +++---
drivers/net/ethernet/cadence/macb_main.c | 5 ++---
drivers/net/ethernet/freescale/fec_main.c | 3 ++-
drivers/net/ethernet/microchip/lan743x_main.c | 2 +-
drivers/net/ethernet/renesas/ravb_main.c | 3 ++-
.../net/ethernet/stmicro/stmmac/stmmac_main.c | 12 ++++++++----
drivers/net/phy/phy_device.c | 18 ++++++++++++++++++
drivers/net/usb/lan78xx.c | 2 +-
include/linux/phy.h | 1 +
9 files changed, 38 insertions(+), 14 deletions(-)
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
index 078a04dc1182..4831f9de5945 100644
--- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
+++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
@@ -895,9 +895,9 @@ int xgene_enet_phy_connect(struct net_device *ndev)
}
pdata->phy_speed = SPEED_UNKNOWN;
- phy_dev->supported &= ~SUPPORTED_10baseT_Half &
- ~SUPPORTED_100baseT_Half &
- ~SUPPORTED_1000baseT_Half;
+ phy_remove_link_mode(phy_dev, ETHTOOL_LINK_MODE_10baseT_Half_BIT);
+ phy_remove_link_mode(phy_dev, ETHTOOL_LINK_MODE_100baseT_Half_BIT);
+ phy_remove_link_mode(phy_dev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
phy_dev->supported |= SUPPORTED_Pause |
SUPPORTED_Asym_Pause;
phy_dev->advertising = phy_dev->supported;
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 2ece43cd9c9b..4ececc20eeb2 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -549,9 +549,8 @@ static int macb_mii_probe(struct net_device *dev)
phy_set_max_speed(phydev, SPEED_100);
if (bp->caps & MACB_CAPS_NO_GIGABIT_HALF)
- phydev->supported &= ~SUPPORTED_1000baseT_Half;
-
- phydev->advertising = phydev->supported;
+ phy_remove_link_mode(phydev,
+ ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
bp->link = 0;
bp->speed = 0;
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 5e849510c689..0c6fd77b6599 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1947,7 +1947,8 @@ static int fec_enet_mii_probe(struct net_device *ndev)
/* mask with MAC supported features */
if (fep->quirks & FEC_QUIRK_HAS_GBIT) {
phy_set_max_speed(phy_dev, 1000);
- phy_dev->supported &= ~SUPPORTED_1000baseT_Half;
+ phy_remove_link_mode(phy_dev,
+ ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
#if !defined(CONFIG_M5272)
phy_dev->supported |= SUPPORTED_Pause;
#endif
diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index e7dce79ff2c9..048307959c01 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -1013,7 +1013,7 @@ static int lan743x_phy_open(struct lan743x_adapter *adapter)
goto return_error;
/* MAC doesn't support 1000T Half */
- phydev->supported &= ~SUPPORTED_1000baseT_Half;
+ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
/* support both flow controls */
phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index aff5516b781e..fb2a1125780d 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -1074,7 +1074,8 @@ static int ravb_phy_init(struct net_device *ndev)
}
/* 10BASE is not supported */
- phydev->supported &= ~PHY_10BT_FEATURES;
+ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_10baseT_Half_BIT);
+ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_10baseT_Full_BIT);
phy_attached_info(phydev);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 3206728ed49f..f77e051b557d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -993,10 +993,14 @@ static int stmmac_init_phy(struct net_device *dev)
* Half-duplex mode not supported with multiqueue
* half-duplex can only works with single queue
*/
- if (tx_cnt > 1)
- phydev->supported &= ~(SUPPORTED_1000baseT_Half |
- SUPPORTED_100baseT_Half |
- SUPPORTED_10baseT_Half);
+ if (tx_cnt > 1) {
+ phy_remove_link_mode(phydev,
+ ETHTOOL_LINK_MODE_10baseT_Half_BIT);
+ phy_remove_link_mode(phydev,
+ ETHTOOL_LINK_MODE_100baseT_Half_BIT);
+ phy_remove_link_mode(phydev,
+ ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
+ }
/*
* Broken HW is sometimes missing the pull-up resistor on the
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index db1172db1e7c..e9ca83a438b0 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1765,6 +1765,24 @@ int phy_set_max_speed(struct phy_device *phydev, u32 max_speed)
}
EXPORT_SYMBOL(phy_set_max_speed);
+/**
+ * phy_remove_link_mode - Remove a supported link mode
+ * @phydev: phy_device structure to remove link mode from
+ * @link_mode: Link mode to be removed
+ *
+ * Description: Some MACs don't support all link modes which the PHY
+ * does. e.g. a 1G MAC often does not support 1000Half. Add a helper
+ * to remove a link mode.
+ */
+void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode)
+{
+ WARN_ON(link_mode > 31);
+
+ phydev->supported &= ~BIT(link_mode);
+ phydev->advertising = phydev->supported;
+}
+EXPORT_SYMBOL(phy_remove_link_mode);
+
static void of_set_phy_supported(struct phy_device *phydev)
{
struct device_node *node = phydev->mdio.dev.of_node;
diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index a9991c5f4736..cc91207eef89 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2178,7 +2178,7 @@ static int lan78xx_phy_init(struct lan78xx_net *dev)
}
/* MAC doesn't support 1000T Half */
- phydev->supported &= ~SUPPORTED_1000baseT_Half;
+ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
/* support both flow controls */
dev->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
diff --git a/include/linux/phy.h b/include/linux/phy.h
index cd6f637cbbfb..9c4c3eca8cf2 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1049,6 +1049,7 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd);
int phy_start_interrupts(struct phy_device *phydev);
void phy_print_status(struct phy_device *phydev);
int phy_set_max_speed(struct phy_device *phydev, u32 max_speed);
+void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode);
int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
int (*run)(struct phy_device *));
--
2.19.0.rc1
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