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mdio: translation of MMD EEE registers to/from ethtool settings

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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>
This commit is contained in:
Allan, Bruce W 2012-08-20 04:55:29 +00:00 • committed by David S. Miller
parent 9e67030af3
commit b32607dd47
2 changed files with 90 additions and 67 deletions
Download patch file Download diff file Expand all files Collapse all files

83
include/linux/mdio.h
View file

@ -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__ */