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authorAllan, Bruce W <bruce.w.allan@intel.com>2012-08-20 04:55:29 +0000
committerDavid S. Miller <davem@davemloft.net>2012-08-22 22:58:27 -0700
commitb32607dd47d456b99f0a16f1c37bc8a0975ffb19 (patch)
tree74be66275dc26089b3a2c7b73b83d08198cff551 /include/linux/mdio.h
parent9e67030af367ab524d0856af9e992de241eca3c7 (diff)
downloadlinux-linaro-stable-b32607dd47d456b99f0a16f1c37bc8a0975ffb19.tar.gz
mdio: translation of MMD EEE registers to/from ethtool settings
The helper functions which translate IEEE MDIO Manageable Device (MMD) Energy-Efficient Ethernet (EEE) registers 3.20, 7.60 and 7.61 to and from the comparable ethtool supported/advertised settings will be needed by drivers other than those in PHYLIB (e.g. e1000e in a follow-on patch). In the same fashion as similar translation functions in linux/mii.h, move these functions from the PHYLIB core to the linux/mdio.h header file so the code will not have to be duplicated in each driver needing MMD-to-ethtool (and vice-versa) translations. The function and some variable names have been renamed to be more descriptive. Not tested on the only hardware that currently calls the related functions, stmmac, because I don't have access to any. Has been compile tested and the translations have been tested on a locally modified version of e1000e. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/mdio.h')
-rw-r--r--include/linux/mdio.h83
1 files changed, 83 insertions, 0 deletions
diff --git a/include/linux/mdio.h b/include/linux/mdio.h
index 7cccafe50e7b..6c406845f7e2 100644
--- a/include/linux/mdio.h
+++ b/include/linux/mdio.h
@@ -377,5 +377,88 @@ static inline void mdio45_ethtool_gset(const struct mdio_if_info *mdio,
extern int mdio_mii_ioctl(const struct mdio_if_info *mdio,
struct mii_ioctl_data *mii_data, int cmd);
+/**
+ * mmd_eee_cap_to_ethtool_sup_t
+ * @eee_cap: value of the MMD EEE Capability register
+ *
+ * A small helper function that translates MMD EEE Capability (3.20) bits
+ * to ethtool supported settings.
+ */
+static inline u32 mmd_eee_cap_to_ethtool_sup_t(u16 eee_cap)
+{
+ u32 supported = 0;
+
+ if (eee_cap & MDIO_EEE_100TX)
+ supported |= SUPPORTED_100baseT_Full;
+ if (eee_cap & MDIO_EEE_1000T)
+ supported |= SUPPORTED_1000baseT_Full;
+ if (eee_cap & MDIO_EEE_10GT)
+ supported |= SUPPORTED_10000baseT_Full;
+ if (eee_cap & MDIO_EEE_1000KX)
+ supported |= SUPPORTED_1000baseKX_Full;
+ if (eee_cap & MDIO_EEE_10GKX4)
+ supported |= SUPPORTED_10000baseKX4_Full;
+ if (eee_cap & MDIO_EEE_10GKR)
+ supported |= SUPPORTED_10000baseKR_Full;
+
+ return supported;
+}
+
+/**
+ * mmd_eee_adv_to_ethtool_adv_t
+ * @eee_adv: value of the MMD EEE Advertisement/Link Partner Ability registers
+ *
+ * A small helper function that translates the MMD EEE Advertisment (7.60)
+ * and MMD EEE Link Partner Ability (7.61) bits to ethtool advertisement
+ * settings.
+ */
+static inline u32 mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv)
+{
+ u32 adv = 0;
+
+ if (eee_adv & MDIO_EEE_100TX)
+ adv |= ADVERTISED_100baseT_Full;
+ if (eee_adv & MDIO_EEE_1000T)
+ adv |= ADVERTISED_1000baseT_Full;
+ if (eee_adv & MDIO_EEE_10GT)
+ adv |= ADVERTISED_10000baseT_Full;
+ if (eee_adv & MDIO_EEE_1000KX)
+ adv |= ADVERTISED_1000baseKX_Full;
+ if (eee_adv & MDIO_EEE_10GKX4)
+ adv |= ADVERTISED_10000baseKX4_Full;
+ if (eee_adv & MDIO_EEE_10GKR)
+ adv |= ADVERTISED_10000baseKR_Full;
+
+ return adv;
+}
+
+/**
+ * ethtool_adv_to_mmd_eee_adv_t
+ * @adv: the ethtool advertisement settings
+ *
+ * A small helper function that translates ethtool advertisement settings
+ * to EEE advertisements for the MMD EEE Advertisement (7.60) and
+ * MMD EEE Link Partner Ability (7.61) registers.
+ */
+static inline u16 ethtool_adv_to_mmd_eee_adv_t(u32 adv)
+{
+ u16 reg = 0;
+
+ if (adv & ADVERTISED_100baseT_Full)
+ reg |= MDIO_EEE_100TX;
+ if (adv & ADVERTISED_1000baseT_Full)
+ reg |= MDIO_EEE_1000T;
+ if (adv & ADVERTISED_10000baseT_Full)
+ reg |= MDIO_EEE_10GT;
+ if (adv & ADVERTISED_1000baseKX_Full)
+ reg |= MDIO_EEE_1000KX;
+ if (adv & ADVERTISED_10000baseKX4_Full)
+ reg |= MDIO_EEE_10GKX4;
+ if (adv & ADVERTISED_10000baseKR_Full)
+ reg |= MDIO_EEE_10GKR;
+
+ return reg;
+}
+
#endif /* __KERNEL__ */
#endif /* __LINUX_MDIO_H__ */