Commit 80e4021c authored by Heiner Kallweit's avatar Heiner Kallweit Committed by David S. Miller
Browse files

net: mdio: add helpers for accessing the EEE CAP2 registers 



This adds helpers for accessing the EEE CAP2 registers.
For now only 2500baseT and 5000baseT modes are supported.

Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 71b605d3

include/linux/mdio.h

+55 −0
Original line number Diff line number Diff line
@@ -439,6 +439,42 @@ static inline void mii_eee_cap1_mod_linkmode_t(unsigned long *adv, u32 val) 
			 adv, val & MDIO_EEE_10GKR);

}



/**

 * mii_eee_cap2_mod_linkmode_sup_t()

 * @adv: target the linkmode settings

 * @val: register value

 *

 * A function that translates value of following registers to the linkmode:

 * IEEE 802.3-2022 45.2.3.11 "EEE control and capability 2" register (3.21)

 */

static inline void mii_eee_cap2_mod_linkmode_sup_t(unsigned long *adv, u32 val)

{

	linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,

			 adv, val & MDIO_EEE_2_5GT);

	linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,

			 adv, val & MDIO_EEE_5GT);

}



/**

 * mii_eee_cap2_mod_linkmode_adv_t()

 * @adv: target the linkmode advertisement settings

 * @val: register value

 *

 * A function that translates value of following registers to the linkmode:

 * IEEE 802.3-2022 45.2.7.16 "EEE advertisement 2" register (7.62)

 * IEEE 802.3-2022 45.2.7.17 "EEE link partner ability 2" register (7.63)

 * Note: Currently this function is the same as mii_eee_cap2_mod_linkmode_sup_t.

 *       For certain, not yet supported, modes however the bits differ.

 *       Therefore create separate functions already.

 */

static inline void mii_eee_cap2_mod_linkmode_adv_t(unsigned long *adv, u32 val)

{

	linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,

			 adv, val & MDIO_EEE_2_5GT);

	linkmode_mod_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,

			 adv, val & MDIO_EEE_5GT);

}



/**

 * linkmode_to_mii_eee_cap1_t()

 * @adv: the linkmode advertisement settings
@@ -466,6 +502,25 @@ static inline u32 linkmode_to_mii_eee_cap1_t(unsigned long *adv) 
	return result;

}



/**

 * linkmode_to_mii_eee_cap2_t()

 * @adv: the linkmode advertisement settings

 *

 * A function that translates linkmode to value for IEEE 802.3-2022 45.2.7.16

 * "EEE advertisement 2" register (7.62)

 */

static inline u32 linkmode_to_mii_eee_cap2_t(unsigned long *adv)

{

	u32 result = 0;



	if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, adv))

		result |= MDIO_EEE_2_5GT;

	if (linkmode_test_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT, adv))

		result |= MDIO_EEE_5GT;



	return result;

}



/**

 * mii_10base_t1_adv_mod_linkmode_t()

 * @adv: linkmode advertisement settings