diff options
| author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2024-01-04 09:47:36 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-01-04 11:25:50 +0000 |
| commit | 5e5401d6612ef599ad45785b941eebda7effc90f (patch) | |
| tree | 360993ce638c1cc417963ac0cedd8a5d34f6bdec /drivers | |
| parent | 3b73a7b8ec3821928cfaf399da7876bc39a5cf78 (diff) | |
net: phylink: move phylink_pcs_neg_mode() into phylink.c
Move phylink_pcs_neg_mode() from the header file into the .c file since
nothing should be using it.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/phy/phylink.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index 3d25a4a6212b..a816391add12 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -1074,6 +1074,72 @@ static void phylink_pcs_an_restart(struct phylink *pl) pl->pcs->ops->pcs_an_restart(pl->pcs); } +/** + * phylink_pcs_neg_mode() - helper to determine PCS inband mode + * @mode: one of %MLO_AN_FIXED, %MLO_AN_PHY, %MLO_AN_INBAND. + * @interface: interface mode to be used + * @advertising: adertisement ethtool link mode mask + * + * Determines the negotiation mode to be used by the PCS, and returns + * one of: + * + * - %PHYLINK_PCS_NEG_NONE: interface mode does not support inband + * - %PHYLINK_PCS_NEG_OUTBAND: an out of band mode (e.g. reading the PHY) + * will be used. + * - %PHYLINK_PCS_NEG_INBAND_DISABLED: inband mode selected but autoneg + * disabled + * - %PHYLINK_PCS_NEG_INBAND_ENABLED: inband mode selected and autoneg enabled + * + * Note: this is for cases where the PCS itself is involved in negotiation + * (e.g. Clause 37, SGMII and similar) not Clause 73. + */ +static unsigned int phylink_pcs_neg_mode(unsigned int mode, + phy_interface_t interface, + const unsigned long *advertising) +{ + unsigned int neg_mode; + + switch (interface) { + case PHY_INTERFACE_MODE_SGMII: + case PHY_INTERFACE_MODE_QSGMII: + case PHY_INTERFACE_MODE_QUSGMII: + case PHY_INTERFACE_MODE_USXGMII: + /* These protocols are designed for use with a PHY which + * communicates its negotiation result back to the MAC via + * inband communication. Note: there exist PHYs that run + * with SGMII but do not send the inband data. + */ + if (!phylink_autoneg_inband(mode)) + neg_mode = PHYLINK_PCS_NEG_OUTBAND; + else + neg_mode = PHYLINK_PCS_NEG_INBAND_ENABLED; + break; + + case PHY_INTERFACE_MODE_1000BASEX: + case PHY_INTERFACE_MODE_2500BASEX: + /* 1000base-X is designed for use media-side for Fibre + * connections, and thus the Autoneg bit needs to be + * taken into account. We also do this for 2500base-X + * as well, but drivers may not support this, so may + * need to override this. + */ + if (!phylink_autoneg_inband(mode)) + neg_mode = PHYLINK_PCS_NEG_OUTBAND; + else if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, + advertising)) + neg_mode = PHYLINK_PCS_NEG_INBAND_ENABLED; + else + neg_mode = PHYLINK_PCS_NEG_INBAND_DISABLED; + break; + + default: + neg_mode = PHYLINK_PCS_NEG_NONE; + break; + } + + return neg_mode; +} + static void phylink_major_config(struct phylink *pl, bool restart, const struct phylink_link_state *state) { |