1 // SPDX-License-Identifier: GPL-2.0
2 // Broadcom BCM84881 NBASE-T PHY driver, as found on a SFP+ module.
5 // Like the Marvell 88x3310, the Broadcom 84881 changes its host-side
6 // interface according to the operating speed between 10GBASE-R,
7 // 2500BASE-X and SGMII (but unlike the 88x3310, without the control
34 	switch (phydev->interface) {  in bcm84881_config_init()
40 		return -ENODEV;  in bcm84881_config_init()
50 	if (!phydev->is_c45 ||  in bcm84881_probe()
51 	    (phydev->c45_ids.devices_in_package & mmd_mask) != mmd_mask)  in bcm84881_probe()
52 		return -ENODEV;  in bcm84881_probe()
65 	/* Although the PHY sets bit 1.11.8, it does not support 10M modes */  in bcm84881_get_features()
67 			   phydev->supported);  in bcm84881_get_features()
69 			   phydev->supported);  in bcm84881_get_features()
88 	phydev->mdix_ctrl = ETH_TP_MDI_AUTO;  in bcm84881_config_aneg()
91 	if (phydev->autoneg == AUTONEG_DISABLE)  in bcm84881_config_aneg()
92 		return -EINVAL;  in bcm84881_config_aneg()
100 	adv = linkmode_adv_to_mii_ctrl1000_t(phydev->advertising);  in bcm84881_config_aneg()
139 		phydev->link = 0;  in bcm84881_read_status()
151 	phydev->autoneg_complete = !!(val & MDIO_AN_STAT1_COMPLETE) &&  in bcm84881_read_status()
153 	phydev->link = !!(val & MDIO_STAT1_LSTATUS) &&  in bcm84881_read_status()
155 	if (phydev->autoneg == AUTONEG_ENABLE && !phydev->autoneg_complete)  in bcm84881_read_status()
156 		phydev->link = false;  in bcm84881_read_status()
158 	linkmode_zero(phydev->lp_advertising);  in bcm84881_read_status()
159 	phydev->speed = SPEED_UNKNOWN;  in bcm84881_read_status()
160 	phydev->duplex = DUPLEX_UNKNOWN;  in bcm84881_read_status()
161 	phydev->pause = 0;  in bcm84881_read_status()
162 	phydev->asym_pause = 0;  in bcm84881_read_status()
163 	phydev->mdix = 0;  in bcm84881_read_status()
165 	if (!phydev->link)  in bcm84881_read_status()
168 	if (phydev->autoneg_complete) {  in bcm84881_read_status()
178 		mii_stat1000_mod_linkmode_lpa_t(phydev->lp_advertising, val);  in bcm84881_read_status()
180 		if (phydev->autoneg == AUTONEG_ENABLE)  in bcm84881_read_status()
184 	if (phydev->autoneg == AUTONEG_DISABLE) {  in bcm84881_read_status()
188 		phydev->link = 0;  in bcm84881_read_status()
192 	/* Set the host link mode - we set the phy interface mode and  in bcm84881_read_status()
200 		phydev->interface = PHY_INTERFACE_MODE_SGMII;  in bcm84881_read_status()
202 		phydev->interface = PHY_INTERFACE_MODE_10GBASER;  in bcm84881_read_status()
204 		phydev->interface = PHY_INTERFACE_MODE_2500BASEX;  in bcm84881_read_status()
207 		phydev->speed = SPEED_100;  in bcm84881_read_status()
210 		phydev->speed = SPEED_1000;  in bcm84881_read_status()
213 		phydev->speed = SPEED_10000;  in bcm84881_read_status()
216 		phydev->speed = SPEED_2500;  in bcm84881_read_status()
219 		phydev->speed = SPEED_5000;  in bcm84881_read_status()
242 /* FIXME: module auto-loading for Clause 45 PHYs seems non-functional */