1 // SPDX-License-Identifier: GPL-2.0+
10  * phy_speed_to_str - Return a string representing the PHY link speed
57 		return "Unsupported (update phy-core.c)";  in phy_speed_to_str()
63  * phy_duplex_to_str - Return string describing the duplex
70 		return "Half";  in phy_duplex_to_str()
75 	return "Unsupported (update phy-core.c)";  in phy_duplex_to_str()
80  * phy_rate_matching_to_str - Return a string describing the rate matching
94 		return "open-loop";  in phy_rate_matching_to_str()
96 	return "Unsupported (update phy-core.c)";  in phy_rate_matching_to_str()
101  * phy_interface_num_ports - Return the number of links that can be carried by
102  *			     a given MAC-PHY physical link. Returns 0 if this is
158  * - iow, descending speed.
252 	PHY_SETTING(   1000, HALF,   1000baseT_Half		),
259 	PHY_SETTING(    100, HALF,    100baseT_Half		),
260 	PHY_SETTING(    100, HALF,    100baseFX_Half		),
264 	PHY_SETTING(     10, HALF,     10baseT_Half		),
267 	PHY_SETTING(     10, HALF,     10baseT1S_Half		),
268 	PHY_SETTING(     10, HALF,     10baseT1S_P2MP_Half	),
274  * phy_lookup_setting - lookup a PHY setting
297 		if (p->bit < __ETHTOOL_LINK_MODE_MASK_NBITS &&  in phy_lookup_setting()
298 		    test_bit(p->bit, mask)) {  in phy_lookup_setting()
300 			if (p->speed == speed && p->duplex == duplex) {  in phy_lookup_setting()
305 				if (!match && p->speed <= speed)  in phy_lookup_setting()
309 				if (p->speed < speed)  in phy_lookup_setting()
331 		    (count == 0 || speeds[count - 1] != settings[i].speed))  in phy_speeds()
343 		if (p->speed > max_speed)  in __set_linkmode_max_speed()
344 			linkmode_clear_bit(p->bit, addr);  in __set_linkmode_max_speed()
352 	__set_linkmode_max_speed(max_speed, phydev->supported);  in __set_phy_supported()
356  * phy_set_max_speed - Set the maximum speed the PHY should support
375 	struct device_node *node = phydev->mdio.dev.of_node;  in of_set_phy_supported()
384 	if (!of_property_read_u32(node, "max-speed", &max_speed))  in of_set_phy_supported()
390 	struct device_node *node = phydev->mdio.dev.of_node;  in of_set_phy_eee_broken()
399 	if (of_property_read_bool(node, "eee-broken-100tx"))  in of_set_phy_eee_broken()
401 	if (of_property_read_bool(node, "eee-broken-1000t"))  in of_set_phy_eee_broken()
403 	if (of_property_read_bool(node, "eee-broken-10gt"))  in of_set_phy_eee_broken()
405 	if (of_property_read_bool(node, "eee-broken-1000kx"))  in of_set_phy_eee_broken()
407 	if (of_property_read_bool(node, "eee-broken-10gkx4"))  in of_set_phy_eee_broken()
409 	if (of_property_read_bool(node, "eee-broken-10gkr"))  in of_set_phy_eee_broken()
412 	phydev->eee_broken_modes = broken;  in of_set_phy_eee_broken()
416  * phy_resolve_aneg_pause - Determine pause autoneg results
427 	if (phydev->duplex == DUPLEX_FULL) {  in phy_resolve_aneg_pause()
428 		phydev->pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,  in phy_resolve_aneg_pause()
429 						  phydev->lp_advertising);  in phy_resolve_aneg_pause()
430 		phydev->asym_pause = linkmode_test_bit(  in phy_resolve_aneg_pause()
432 			phydev->lp_advertising);  in phy_resolve_aneg_pause()
438  * phy_resolve_aneg_linkmode - resolve the advertisements into PHY settings
450 	linkmode_and(common, phydev->lp_advertising, phydev->advertising);  in phy_resolve_aneg_linkmode()
454 			phydev->speed = settings[i].speed;  in phy_resolve_aneg_linkmode()
455 			phydev->duplex = settings[i].duplex;  in phy_resolve_aneg_linkmode()
464  * phy_check_downshift - check whether downshift occurred
470  * read_status callback and sets phydev->speed to the actual link speed.
477 	phydev->downshifted_rate = 0;  in phy_check_downshift()
479 	if (phydev->autoneg == AUTONEG_DISABLE ||  in phy_check_downshift()
480 	    phydev->speed == SPEED_UNKNOWN)  in phy_check_downshift()
483 	linkmode_and(common, phydev->lp_advertising, phydev->advertising);  in phy_check_downshift()
491 	if (speed == SPEED_UNKNOWN || phydev->speed >= speed)  in phy_check_downshift()
495 		    phy_speed_to_str(speed), phy_speed_to_str(phydev->speed));  in phy_check_downshift()
497 	phydev->downshifted_rate = 1;  in phy_check_downshift()
506 	linkmode_and(common, phydev->lp_advertising, phydev->advertising);  in phy_resolve_min_speed()
508 	while (--i >= 0) {  in phy_resolve_min_speed()
524 		return -EINVAL;  in phy_speed_down_core()
526 	__set_linkmode_max_speed(min_common_speed, phydev->advertising);  in phy_speed_down_core()
531 static void mmd_phy_indirect(struct mii_bus *bus, int phy_addr, int devad,  in mmd_phy_indirect()  argument
535 	__mdiobus_write(bus, phy_addr, MII_MMD_CTRL, devad);  in mmd_phy_indirect()
538 	__mdiobus_write(bus, phy_addr, MII_MMD_DATA, regnum);  in mmd_phy_indirect()
541 	__mdiobus_write(bus, phy_addr, MII_MMD_CTRL,  in mmd_phy_indirect()
545 static int mmd_phy_read(struct mii_bus *bus, int phy_addr, bool is_c45,  in mmd_phy_read()  argument
549 		return __mdiobus_c45_read(bus, phy_addr, devad, regnum);  in mmd_phy_read()
551 	mmd_phy_indirect(bus, phy_addr, devad, regnum);  in mmd_phy_read()
553 	return __mdiobus_read(bus, phy_addr, MII_MMD_DATA);  in mmd_phy_read()
556 static int mmd_phy_write(struct mii_bus *bus, int phy_addr, bool is_c45,  in mmd_phy_write()  argument
560 		return __mdiobus_c45_write(bus, phy_addr, devad, regnum, val);  in mmd_phy_write()
562 	mmd_phy_indirect(bus, phy_addr, devad, regnum);  in mmd_phy_write()
564 	return __mdiobus_write(bus, phy_addr, MII_MMD_DATA, val);  in mmd_phy_write()
568  * __phy_read_mmd - Convenience function for reading a register
579 		return -EINVAL;  in __phy_read_mmd()
581 	if (phydev->drv && phydev->drv->read_mmd)  in __phy_read_mmd()
582 		return phydev->drv->read_mmd(phydev, devad, regnum);  in __phy_read_mmd()
584 	return mmd_phy_read(phydev->mdio.bus, phydev->mdio.addr,  in __phy_read_mmd()
585 			    phydev->is_c45, devad, regnum);  in __phy_read_mmd()
590  * phy_read_mmd - Convenience function for reading a register
611  * __phy_write_mmd - Convenience function for writing a register
623 		return -EINVAL;  in __phy_write_mmd()
625 	if (phydev->drv && phydev->drv->write_mmd)  in __phy_write_mmd()
626 		return phydev->drv->write_mmd(phydev, devad, regnum, val);  in __phy_write_mmd()
628 	return mmd_phy_write(phydev->mdio.bus, phydev->mdio.addr,  in __phy_write_mmd()
629 			     phydev->is_c45, devad, regnum, val);  in __phy_write_mmd()
634  * phy_write_mmd - Convenience function for writing a register
656  * __phy_package_read_mmd - read MMD reg relative to PHY package base addr
680 		return -EINVAL;  in __phy_package_read_mmd()
682 	return mmd_phy_read(phydev->mdio.bus, addr, phydev->is_c45, devad,  in __phy_package_read_mmd()
688  * phy_package_read_mmd - read MMD reg relative to PHY package base addr
713 		return -EINVAL;  in phy_package_read_mmd()
716 	val = mmd_phy_read(phydev->mdio.bus, addr, phydev->is_c45, devad,  in phy_package_read_mmd()
725  * __phy_package_write_mmd - write MMD reg relative to PHY package base addr
750 		return -EINVAL;  in __phy_package_write_mmd()
752 	return mmd_phy_write(phydev->mdio.bus, addr, phydev->is_c45, devad,  in __phy_package_write_mmd()
758  * phy_package_write_mmd - write MMD reg relative to PHY package base addr
784 		return -EINVAL;  in phy_package_write_mmd()
787 	ret = mmd_phy_write(phydev->mdio.bus, addr, phydev->is_c45, devad,  in phy_package_write_mmd()
796  * phy_modify_changed - Function for modifying a PHY register
803  * because the bus read/write functions may wait for an interrupt
821  * __phy_modify - Convenience function for modifying a PHY register
828  * because the bus read/write functions may wait for an interrupt
842  * phy_modify - Convenience function for modifying a given PHY register
849  * because the bus read/write functions may wait for an interrupt
865  * __phy_modify_mmd_changed - Function for modifying a register on MMD
897  * phy_modify_mmd_changed - Function for modifying a register on MMD
905  * because the bus read/write functions may wait for an interrupt
924  * __phy_modify_mmd - Convenience function for modifying a register on MMD
932  * because the bus read/write functions may wait for an interrupt
947  * phy_modify_mmd - Convenience function for modifying a register on MMD
955  * because the bus read/write functions may wait for an interrupt
973 …if (WARN_ONCE(!phydev->drv->read_page, "read_page callback not available, PHY driver not loaded?\n…  in __phy_read_page()
974 		return -EOPNOTSUPP;  in __phy_read_page()
976 	return phydev->drv->read_page(phydev);  in __phy_read_page()
981 …if (WARN_ONCE(!phydev->drv->write_page, "write_page callback not available, PHY driver not loaded?…  in __phy_write_page()
982 		return -EOPNOTSUPP;  in __phy_write_page()
984 	return phydev->drv->write_page(phydev, page);  in __phy_write_page()
988  * phy_save_page() - take the bus lock and save the current page
991  * Take the MDIO bus lock, and return the current page number. On error,
1003  * phy_select_page() - take the bus lock, save the current page, and set a page
1007  * Take the MDIO bus lock to protect against concurrent access, save the
1032  * phy_restore_page() - restore the page register and release the bus lock
1037  * Release the MDIO bus lock, restoring @oldpage if it is a valid page.
1071  * phy_read_paged() - Convenience function for reading a paged register
1091  * phy_write_paged() - Convenience function for writing a paged register
1112  * phy_modify_paged_changed() - Function for modifying a paged register
1135  * phy_modify_paged() - Convenience function for modifying a paged register