1 // SPDX-License-Identifier: GPL-2.0-only
5  * Driver for PowerPC 4xx on-chip ethernet controller, PHY support.
18  * (c) 2004-2005, Eugene Surovegin <ebs@ebshome.net>
37 	return phy->mdio_read(phy->dev, phy->address, reg);  in _phy_read()
42 	phy->mdio_write(phy->dev, phy->address, reg, val);  in _phy_write()
47 	return phy->mdio_read(phy->dev, phy->gpcs_address, reg);  in gpcs_phy_read()
52 	phy->mdio_write(phy->dev, phy->gpcs_address, reg, val);  in gpcs_phy_write()
67 	while (--limit) {  in emac_mii_reset_phy()
71 		udelay(10);  in emac_mii_reset_phy()
91 	while (--limit) {  in emac_mii_reset_gpcs()
95 		udelay(10);  in emac_mii_reset_gpcs()
100 	if (limit > 0 && phy->mode == PHY_INTERFACE_MODE_SGMII) {  in emac_mii_reset_gpcs()
114 	phy->autoneg = AUTONEG_ENABLE;  in genmii_setup_aneg()
115 	phy->speed = SPEED_10;  in genmii_setup_aneg()
116 	phy->duplex = DUPLEX_HALF;  in genmii_setup_aneg()
117 	phy->pause = phy->asym_pause = 0;  in genmii_setup_aneg()
118 	phy->advertising = advertise;  in genmii_setup_aneg()
148 	if (phy->features &  in genmii_setup_aneg()
173 	phy->autoneg = AUTONEG_DISABLE;  in genmii_setup_forced()
174 	phy->speed = speed;  in genmii_setup_forced()
175 	phy->duplex = fd;  in genmii_setup_forced()
176 	phy->pause = phy->asym_pause = 0;  in genmii_setup_forced()
197 		return -EINVAL;  in genmii_setup_forced()
215 	if (phy->autoneg == AUTONEG_ENABLE && !(status & BMSR_ANEGCOMPLETE))  in genmii_poll_link()
222 	if (phy->autoneg == AUTONEG_ENABLE) {  in genmii_read_link()
228 		if (phy->features &  in genmii_read_link()
239 		phy->speed = SPEED_10;  in genmii_read_link()
240 		phy->duplex = DUPLEX_HALF;  in genmii_read_link()
241 		phy->pause = phy->asym_pause = 0;  in genmii_read_link()
244 			phy->speed = SPEED_1000;  in genmii_read_link()
246 				phy->duplex = DUPLEX_FULL;  in genmii_read_link()
248 			phy->speed = SPEED_100;  in genmii_read_link()
250 				phy->duplex = DUPLEX_FULL;  in genmii_read_link()
252 			phy->duplex = DUPLEX_FULL;  in genmii_read_link()
254 		if (phy->duplex == DUPLEX_FULL) {  in genmii_read_link()
255 			phy->pause = lpa & LPA_PAUSE_CAP ? 1 : 0;  in genmii_read_link()
256 			phy->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0;  in genmii_read_link()
264 			phy->duplex = DUPLEX_FULL;  in genmii_read_link()
266 			phy->duplex = DUPLEX_HALF;  in genmii_read_link()
268 			phy->speed = SPEED_1000;  in genmii_read_link()
270 			phy->speed = SPEED_100;  in genmii_read_link()
272 			phy->speed = SPEED_10;  in genmii_read_link()
274 		phy->pause = phy->asym_pause = 0;  in genmii_read_link()
279 /* Generic implementation for most 10/100/1000 PHYs */
316 	switch (phy->mode) {  in cis8201_init()
337 	/* Disable TX_EN -> CRS echo mode, otherwise 10/HDX doesn't work */  in cis8201_init()
355 	.name		= "CIS8201 Gigabit Ethernet",
363 	.name		= "BCM5248 10/100 SMII Ethernet",
397 	reg_short |= 0x8000; /* bypass Auto-Negotiation */  in m88e1112_init()
435 	.name		= "ET1011C Gigabit Ethernet",
477 	phy_write(phy, 0x1e, 0x2d47); /* Value copied from u-boot */  in ar8035_init()
479 	phy_write(phy, 0x1e, 0xbc20); /* Value copied from u-boot */  in ar8035_init()
495 	.name		= "Atheros 8035 Gigabit Ethernet",
516 	phy->autoneg = AUTONEG_DISABLE;  in emac_mii_phy_probe()
517 	phy->advertising = 0;  in emac_mii_phy_probe()
518 	phy->address = address;  in emac_mii_phy_probe()
519 	phy->speed = SPEED_10;  in emac_mii_phy_probe()
520 	phy->duplex = DUPLEX_HALF;  in emac_mii_phy_probe()
521 	phy->pause = phy->asym_pause = 0;  in emac_mii_phy_probe()
525 		return -ENODEV;  in emac_mii_phy_probe()
530 		if ((id & def->phy_id_mask) == def->phy_id)  in emac_mii_phy_probe()
534 		return -ENODEV;  in emac_mii_phy_probe()
536 	phy->def = def;  in emac_mii_phy_probe()
539 	phy->features = def->features;  in emac_mii_phy_probe()
540 	if (!phy->features) {  in emac_mii_phy_probe()
543 			phy->features |= SUPPORTED_Autoneg;  in emac_mii_phy_probe()
545 			phy->features |= SUPPORTED_10baseT_Half;  in emac_mii_phy_probe()
547 			phy->features |= SUPPORTED_10baseT_Full;  in emac_mii_phy_probe()
549 			phy->features |= SUPPORTED_100baseT_Half;  in emac_mii_phy_probe()
551 			phy->features |= SUPPORTED_100baseT_Full;  in emac_mii_phy_probe()
555 				phy->features |= SUPPORTED_1000baseT_Full;  in emac_mii_phy_probe()
557 				phy->features |= SUPPORTED_1000baseT_Half;  in emac_mii_phy_probe()
559 		phy->features |= SUPPORTED_MII;  in emac_mii_phy_probe()
563 	phy->advertising = phy->features;  in emac_mii_phy_probe()