This change allows phytool [1] and similar tools to read and write C45 phy registers from userspace.
This is useful for debugging and for porting vendor phy diagnostics tools. [1] https://github.com/wkz/phytool Signed-off-by: Nikita Yushchenko <[email protected]> --- drivers/net/phy/phy.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index e8885429293a..3d991958bde0 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -407,6 +407,7 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) struct mii_ioctl_data *mii_data = if_mii(ifr); u16 val = mii_data->val_in; bool change_autoneg = false; + int ret; switch (cmd) { case SIOCGMIIPHY: @@ -414,12 +415,28 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) /* fall through */ case SIOCGMIIREG: + if (mdio_phy_id_is_c45(mii_data->phy_id)) { + ret = phy_read_mmd(phydev, + mdio_phy_id_devad(mii_data->phy_id), + mii_data->reg_num); + if (ret < 0) + return ret; + mii_data->val_out = ret; + return 0; + } mii_data->val_out = mdiobus_read(phydev->mdio.bus, mii_data->phy_id, mii_data->reg_num); return 0; case SIOCSMIIREG: + if (mdio_phy_id_is_c45(mii_data->phy_id)) { + ret = phy_write_mmd(phydev, + mdio_phy_id_devad(mii_data->phy_id), + mii_data->reg_num, + mii_data->val_in); + return ret; + } if (mii_data->phy_id == phydev->mdio.addr) { switch (mii_data->reg_num) { case MII_BMCR: -- 2.11.0
