diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2019-05-28 10:57:29 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-05-31 12:37:46 -0700 |
| commit | cdea04c24616416f8239d86a1012d924fb6f0d30 (patch) | |
| tree | 76eaf93f06441081b2b74d70c9d4198b7460f56d /drivers/net/phy/phy.c | |
| parent | 7b3b0e89bcf3acb56bf59666122226de0913a8b4 (diff) | |
| download | linux-cdea04c24616416f8239d86a1012d924fb6f0d30.tar.bz2 | |
net: phy: allow Clause 45 access via mii ioctl
Allow userspace to generate Clause 45 MII access cycles via phylib.
This is useful for tools such as mii-diag to be able to inspect Clause
45 PHYs.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/phy.c')
| -rw-r--r-- | drivers/net/phy/phy.c | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 84671d868a80..0084220d10dc 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -409,6 +409,7 @@ 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 prtad, devad; switch (cmd) { case SIOCGMIIPHY: @@ -416,14 +417,29 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) /* fall through */ case SIOCGMIIREG: - mii_data->val_out = mdiobus_read(phydev->mdio.bus, - mii_data->phy_id, - mii_data->reg_num); + if (mdio_phy_id_is_c45(mii_data->phy_id)) { + prtad = mdio_phy_id_prtad(mii_data->phy_id); + devad = mdio_phy_id_devad(mii_data->phy_id); + devad = MII_ADDR_C45 | devad << 16 | mii_data->reg_num; + } else { + prtad = mii_data->phy_id; + devad = mii_data->reg_num; + } + mii_data->val_out = mdiobus_read(phydev->mdio.bus, prtad, + devad); return 0; case SIOCSMIIREG: - if (mii_data->phy_id == phydev->mdio.addr) { - switch (mii_data->reg_num) { + if (mdio_phy_id_is_c45(mii_data->phy_id)) { + prtad = mdio_phy_id_prtad(mii_data->phy_id); + devad = mdio_phy_id_devad(mii_data->phy_id); + devad = MII_ADDR_C45 | devad << 16 | mii_data->reg_num; + } else { + prtad = mii_data->phy_id; + devad = mii_data->reg_num; + } + if (prtad == phydev->mdio.addr) { + switch (devad) { case MII_BMCR: if ((val & (BMCR_RESET | BMCR_ANENABLE)) == 0) { if (phydev->autoneg == AUTONEG_ENABLE) @@ -456,11 +472,10 @@ int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd) } } - mdiobus_write(phydev->mdio.bus, mii_data->phy_id, - mii_data->reg_num, val); + mdiobus_write(phydev->mdio.bus, prtad, devad, val); - if (mii_data->phy_id == phydev->mdio.addr && - mii_data->reg_num == MII_BMCR && + if (prtad == phydev->mdio.addr && + devad == MII_BMCR && val & BMCR_RESET) return phy_init_hw(phydev); |