From d27e3e2b10eb25ba1c96177132e8a6e8b8f953af Mon Sep 17 00:00:00 2001 From: "Russell King (Oracle)" Date: Fri, 26 Nov 2021 16:53:48 +0000 Subject: net: phylink: split out PHY validation from phylink_bringup_phy() When bringing up a PHY, we need to work out which ethtool link modes it should support and advertise. Clause 22 PHYs operate in a single interface mode, which can be easily dealt with. However, clause 45 PHYs tend to switch interface mode depending on the media. We need more flexible validation at this point, so this patch splits out that code in preparation to changing it. Signed-off-by: Russell King (Oracle) --- drivers/net/phy/phylink.c | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index ef7287959792..c425ddf2d52e 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -1419,6 +1419,24 @@ static void phylink_phy_change(struct phy_device *phydev, bool up) phylink_pause_to_str(pl->phy_state.pause)); } +static int phylink_validate_phy(struct phylink *pl, struct phy_device *phy, + unsigned long *supported, + struct phylink_link_state *state) +{ + /* Clause 45 PHYs switch their Serdes lane between several different + * modes, normally 10GBASE-R, SGMII. Some use 2500BASE-X for 2.5G + * speeds. We really need to know which interface modes the PHY and + * MAC supports to properly work out which linkmodes can be supported. + */ + if (phy->is_c45 && + state->interface != PHY_INTERFACE_MODE_RXAUI && + state->interface != PHY_INTERFACE_MODE_XAUI && + state->interface != PHY_INTERFACE_MODE_USXGMII) + state->interface = PHY_INTERFACE_MODE_NA; + + return phylink_validate(pl, supported, state); +} + static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy, phy_interface_t interface) { @@ -1439,21 +1457,9 @@ static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy, memset(&config, 0, sizeof(config)); linkmode_copy(supported, phy->supported); linkmode_copy(config.advertising, phy->advertising); + config.interface = interface; - /* Clause 45 PHYs switch their Serdes lane between several different - * modes, normally 10GBASE-R, SGMII. Some use 2500BASE-X for 2.5G - * speeds. We really need to know which interface modes the PHY and - * MAC supports to properly work out which linkmodes can be supported. - */ - if (phy->is_c45 && - interface != PHY_INTERFACE_MODE_RXAUI && - interface != PHY_INTERFACE_MODE_XAUI && - interface != PHY_INTERFACE_MODE_USXGMII) - config.interface = PHY_INTERFACE_MODE_NA; - else - config.interface = interface; - - ret = phylink_validate(pl, supported, &config); + ret = phylink_validate_phy(pl, phy, supported, &config); if (ret) { phylink_warn(pl, "validation of %s with support %*pb and advertisement %*pb failed: %d\n", phy_modes(config.interface), -- cgit