From 70c14b9dbec8bc53095827a5b09a5ffdd96aa5ea Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 31 Jan 2020 18:17:58 +0000 Subject: net: phylink: pcs: add 802.3 clause 45 helpers 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 --- 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 23a5e68d9222..bbe46d68be11 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -2268,4 +2268,34 @@ 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 -- cgit