Commit b8679ef8 authored by Russell King's avatar Russell King Committed by David S. Miller
Browse files

net: phylink: pcs: add 802.3 clause 45 helpers 



Implement helpers for PCS accessed via the MII bus using 802.3 clause
45 cycles for 10GBASE-R. Only link up/down is supported, 10G full
duplex is assumed.

Signed-off-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 74db1c18

drivers/net/phy/phylink.c

+30 −0
Original line number Diff line number Diff line
@@ -2274,4 +2274,34 @@ void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs) 
}

EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_an_restart);



#define C45_ADDR(d,a)	(MII_ADDR_C45 | (d) << 16 | (a))

void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,

				   struct phylink_link_state *state)

{

	struct mii_bus *bus = pcs->bus;

	int addr = pcs->addr;

	int stat;



	stat = mdiobus_read(bus, addr, C45_ADDR(MDIO_MMD_PCS, MDIO_STAT1));

	if (stat < 0) {

		state->link = false;

		return;

	}



	state->link = !!(stat & MDIO_STAT1_LSTATUS);

	if (!state->link)

		return;



	switch (state->interface) {

	case PHY_INTERFACE_MODE_10GBASER:

		state->speed = SPEED_10000;

		state->duplex = DUPLEX_FULL;

		break;



	default:

		break;

	}

}

EXPORT_SYMBOL_GPL(phylink_mii_c45_pcs_get_state);



MODULE_LICENSE("GPL v2");

include/linux/phylink.h

+2 −0
Original line number Diff line number Diff line
@@ -323,4 +323,6 @@ int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs, 
					const struct phylink_link_state *state);

void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs);



void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,

				   struct phylink_link_state *state);

#endif