diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/710-v5.3-net-phy-allow-Clause-45-access-via-mii-ioctl.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/710-v5.3-net-phy-allow-Clause-45-access-via-mii-ioctl.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/710-v5.3-net-phy-allow-Clause-45-access-via-mii-ioctl.patch b/target/linux/generic/backport-5.4/710-v5.3-net-phy-allow-Clause-45-access-via-mii-ioctl.patch new file mode 100644 index 0000000000..3a601c65b0 --- /dev/null +++ b/target/linux/generic/backport-5.4/710-v5.3-net-phy-allow-Clause-45-access-via-mii-ioctl.patch @@ -0,0 +1,77 @@ +From eb5df3d026824832831376bbdf04e01a52776eea Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Tue, 28 May 2019 10:57:29 +0100 +Subject: [PATCH 608/660] 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> +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phy.c | 33 ++++++++++++++++++++++++--------- + 1 file changed, 24 insertions(+), 9 deletions(-) + +--- a/drivers/net/phy/phy.c ++++ b/drivers/net/phy/phy.c +@@ -397,6 +397,7 @@ int phy_mii_ioctl(struct phy_device *phy + 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: +@@ -404,14 +405,29 @@ int phy_mii_ioctl(struct phy_device *phy + /* 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) +@@ -443,11 +459,10 @@ int phy_mii_ioctl(struct phy_device *phy + } + } + +- 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); + |