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net: mdio: add clause 73 to ethtool conversion helper

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Add a helper to convert a clause 73 advertisement to an ethtool bitmap.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle) 2023-05-23 11:15:48 +01:00 committed by Jakub Kicinski
parent 41a45ea49d
commit e9261467ae
2 changed files with 63 additions and 0 deletions
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39
include/linux/mdio.h
View file

@ -486,6 +486,45 @@ static inline u32 linkmode_adv_to_mii_10base_t1_t(unsigned long *adv)
return result;
}
/**
* mii_c73_mod_linkmode - convert a Clause 73 advertisement to linkmodes
* @adv: linkmode advertisement setting
* @lpa: array of three u16s containing the advertisement
*
* Convert an IEEE 802.3 Clause 73 advertisement to ethtool link modes.
*/
static inline void mii_c73_mod_linkmode(unsigned long *adv, u16 *lpa)
{
linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT,
adv, lpa[0] & MDIO_AN_C73_0_PAUSE);
linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT,
adv, lpa[0] & MDIO_AN_C73_0_ASM_DIR);
linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT,
adv, lpa[1] & MDIO_AN_C73_1_1000BASE_KX);
linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT,
adv, lpa[1] & MDIO_AN_C73_1_10GBASE_KX4);
linkmode_mod_bit(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT,
adv, lpa[1] & MDIO_AN_C73_1_40GBASE_KR4);
linkmode_mod_bit(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT,
adv, lpa[1] & MDIO_AN_C73_1_40GBASE_CR4);
/* 100GBASE_CR10 and 100GBASE_KP4 not implemented */
linkmode_mod_bit(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT,
adv, lpa[1] & MDIO_AN_C73_1_100GBASE_KR4);
linkmode_mod_bit(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT,
adv, lpa[1] & MDIO_AN_C73_1_100GBASE_CR4);
/* 25GBASE_R_S not implemented */
/* The 25GBASE_R bit can be used for 25Gbase KR or CR modes */
linkmode_mod_bit(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT,
adv, lpa[1] & MDIO_AN_C73_1_25GBASE_R);
linkmode_mod_bit(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT,
adv, lpa[1] & MDIO_AN_C73_1_25GBASE_R);
linkmode_mod_bit(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT,
adv, lpa[1] & MDIO_AN_C73_1_10GBASE_KR);
linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT,
adv, lpa[2] & MDIO_AN_C73_2_2500BASE_KX);
/* 5GBASE_KR not implemented */
}
int __mdiobus_read(struct mii_bus *bus, int addr, u32 regnum);
int __mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val);
int __mdiobus_modify_changed(struct mii_bus *bus, int addr, u32 regnum,

24
include/uapi/linux/mdio.h
View file

@ -231,6 +231,30 @@
#define MDIO_PMA_EXTABLE_BT1 0x0800 /* BASE-T1 ability */
#define MDIO_PMA_EXTABLE_NBT 0x4000 /* 2.5/5GBASE-T ability */
/* AN Clause 73 linkword */
#define MDIO_AN_C73_0_S_MASK GENMASK(4, 0)
#define MDIO_AN_C73_0_E_MASK GENMASK(9, 5)
#define MDIO_AN_C73_0_PAUSE BIT(10)
#define MDIO_AN_C73_0_ASM_DIR BIT(11)
#define MDIO_AN_C73_0_C2 BIT(12)
#define MDIO_AN_C73_0_RF BIT(13)
#define MDIO_AN_C73_0_ACK BIT(14)
#define MDIO_AN_C73_0_NP BIT(15)
#define MDIO_AN_C73_1_T_MASK GENMASK(4, 0)
#define MDIO_AN_C73_1_1000BASE_KX BIT(5)
#define MDIO_AN_C73_1_10GBASE_KX4 BIT(6)
#define MDIO_AN_C73_1_10GBASE_KR BIT(7)
#define MDIO_AN_C73_1_40GBASE_KR4 BIT(8)
#define MDIO_AN_C73_1_40GBASE_CR4 BIT(9)
#define MDIO_AN_C73_1_100GBASE_CR10 BIT(10)
#define MDIO_AN_C73_1_100GBASE_KP4 BIT(11)
#define MDIO_AN_C73_1_100GBASE_KR4 BIT(12)
#define MDIO_AN_C73_1_100GBASE_CR4 BIT(13)
#define MDIO_AN_C73_1_25GBASE_R_S BIT(14)
#define MDIO_AN_C73_1_25GBASE_R BIT(15)
#define MDIO_AN_C73_2_2500BASE_KX BIT(0)
#define MDIO_AN_C73_2_5GBASE_KR BIT(1)
/* PHY XGXS lane state register. */
#define MDIO_PHYXS_LNSTAT_SYNC0 0x0001
#define MDIO_PHYXS_LNSTAT_SYNC1 0x0002