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From 7b864612a6e3b139a5a607abd0048a19078fe42f Mon Sep 17 00:00:00 2001
From: Phil Sutter <phil@nwl.cc>
Date: Wed, 14 May 2014 02:55:06 +0200
Subject: [PATCH] phy: add ethtool ioctl support, used by ag71xx driver
---
drivers/net/phy/phy.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
include/linux/phy.h | 1 +
2 files changed, 45 insertions(+)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 76d96b9..9439ef3 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -293,6 +293,50 @@ int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd)
}
EXPORT_SYMBOL(phy_ethtool_gset);
+int phy_ethtool_ioctl(struct phy_device *phydev, void *useraddr)
+{
+ u32 cmd;
+ int tmp;
+ struct ethtool_cmd ecmd = { ETHTOOL_GSET };
+ struct ethtool_value edata = { ETHTOOL_GLINK };
+
+ if (get_user(cmd, (u32 *) useraddr))
+ return -EFAULT;
+
+ switch (cmd) {
+ case ETHTOOL_GSET:
+ phy_ethtool_gset(phydev, &ecmd);
+ if (copy_to_user(useraddr, &ecmd, sizeof(ecmd)))
+ return -EFAULT;
+ return 0;
+
+ case ETHTOOL_SSET:
+ if (copy_from_user(&ecmd, useraddr, sizeof(ecmd)))
+ return -EFAULT;
+ return phy_ethtool_sset(phydev, &ecmd);
+
+ case ETHTOOL_NWAY_RST:
+ /* if autoneg is off, it's an error */
+ tmp = phy_read(phydev, MII_BMCR);
+ if (tmp & BMCR_ANENABLE) {
+ tmp |= (BMCR_ANRESTART);
+ phy_write(phydev, MII_BMCR, tmp);
+ return 0;
+ }
+ return -EINVAL;
+
+ case ETHTOOL_GLINK:
+ edata.data = (phy_read(phydev,
+ MII_BMSR) & BMSR_LSTATUS) ? 1 : 0;
+ if (copy_to_user(useraddr, &edata, sizeof(edata)))
+ return -EFAULT;
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+EXPORT_SYMBOL(phy_ethtool_ioctl);
+
/**
* phy_mii_ioctl - generic PHY MII ioctl interface
* @phydev: the phy_device struct
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 565188c..9ab0d79 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -628,6 +628,7 @@ void phy_stop_machine(struct phy_device *phydev);
int phy_ethtool_sset(struct phy_device *phydev, struct ethtool_cmd *cmd);
int phy_ethtool_gset(struct phy_device *phydev, struct ethtool_cmd *cmd);
int phy_mii_ioctl(struct phy_device *phydev, struct ifreq *ifr, int cmd);
+int phy_ethtool_ioctl(struct phy_device *phydev, void *useraddr);
int phy_start_interrupts(struct phy_device *phydev);
void phy_print_status(struct phy_device *phydev);
void phy_device_free(struct phy_device *phydev);
--
1.8.5.3
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