1 // SPDX-License-Identifier: GPL-2.0+
10  * phy_speed_to_str - Return a string representing the PHY link speed
55 		return "Unsupported (update phy-core.c)";  in phy_speed_to_str()
61  * phy_duplex_to_str - Return string describing the duplex
68 		return "Half";  in phy_duplex_to_str()
73 	return "Unsupported (update phy-core.c)";  in phy_duplex_to_str()
79  * - iow, descending speed.
167 	PHY_SETTING(   1000, HALF,   1000baseT_Half		),
173 	PHY_SETTING(    100, HALF,    100baseT_Half		),
174 	PHY_SETTING(    100, HALF,    100baseFX_Half		),
178 	PHY_SETTING(     10, HALF,     10baseT_Half		),
183  * phy_lookup_setting - lookup a PHY setting
206 		if (p->bit < __ETHTOOL_LINK_MODE_MASK_NBITS &&  in phy_lookup_setting()
207 		    test_bit(p->bit, mask)) {  in phy_lookup_setting()
209 			if (p->speed == speed && p->duplex == duplex) {  in phy_lookup_setting()
214 				if (!match && p->speed <= speed)  in phy_lookup_setting()
218 				if (p->speed < speed)  in phy_lookup_setting()
240 		    (count == 0 || speeds[count - 1] != settings[i].speed))  in phy_speeds()
252 		if (p->speed > max_speed)  in __set_linkmode_max_speed()
253 			linkmode_clear_bit(p->bit, addr);  in __set_linkmode_max_speed()
263 	return __set_linkmode_max_speed(max_speed, phydev->supported);  in __set_phy_supported()
267  * phy_set_max_speed - Set the maximum speed the PHY should support
292 	struct device_node *node = phydev->mdio.dev.of_node;  in of_set_phy_supported()
301 	if (!of_property_read_u32(node, "max-speed", &max_speed))  in of_set_phy_supported()
307 	struct device_node *node = phydev->mdio.dev.of_node;  in of_set_phy_eee_broken()
316 	if (of_property_read_bool(node, "eee-broken-100tx"))  in of_set_phy_eee_broken()
318 	if (of_property_read_bool(node, "eee-broken-1000t"))  in of_set_phy_eee_broken()
320 	if (of_property_read_bool(node, "eee-broken-10gt"))  in of_set_phy_eee_broken()
322 	if (of_property_read_bool(node, "eee-broken-1000kx"))  in of_set_phy_eee_broken()
324 	if (of_property_read_bool(node, "eee-broken-10gkx4"))  in of_set_phy_eee_broken()
326 	if (of_property_read_bool(node, "eee-broken-10gkr"))  in of_set_phy_eee_broken()
329 	phydev->eee_broken_modes = broken;  in of_set_phy_eee_broken()
333  * phy_resolve_aneg_pause - Determine pause autoneg results
344 	if (phydev->duplex == DUPLEX_FULL) {  in phy_resolve_aneg_pause()
345 		phydev->pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,  in phy_resolve_aneg_pause()
346 						  phydev->lp_advertising);  in phy_resolve_aneg_pause()
347 		phydev->asym_pause = linkmode_test_bit(  in phy_resolve_aneg_pause()
349 			phydev->lp_advertising);  in phy_resolve_aneg_pause()
355  * phy_resolve_aneg_linkmode - resolve the advertisements into PHY settings
367 	linkmode_and(common, phydev->lp_advertising, phydev->advertising);  in phy_resolve_aneg_linkmode()
371 			phydev->speed = settings[i].speed;  in phy_resolve_aneg_linkmode()
372 			phydev->duplex = settings[i].duplex;  in phy_resolve_aneg_linkmode()
381  * phy_check_downshift - check whether downshift occurred
387  * read_status callback and sets phydev->speed to the actual link speed.
394 	phydev->downshifted_rate = 0;  in phy_check_downshift()
396 	if (phydev->autoneg == AUTONEG_DISABLE ||  in phy_check_downshift()
397 	    phydev->speed == SPEED_UNKNOWN)  in phy_check_downshift()
400 	linkmode_and(common, phydev->lp_advertising, phydev->advertising);  in phy_check_downshift()
408 	if (speed == SPEED_UNKNOWN || phydev->speed >= speed)  in phy_check_downshift()
412 		    phy_speed_to_str(speed), phy_speed_to_str(phydev->speed));  in phy_check_downshift()
414 	phydev->downshifted_rate = 1;  in phy_check_downshift()
423 	linkmode_and(common, phydev->lp_advertising, phydev->advertising);  in phy_resolve_min_speed()
425 	while (--i >= 0) {  in phy_resolve_min_speed()
441 		return -EINVAL;  in phy_speed_down_core()
443 	return __set_linkmode_max_speed(min_common_speed, phydev->advertising);  in phy_speed_down_core()
446 static void mmd_phy_indirect(struct mii_bus *bus, int phy_addr, int devad,  in mmd_phy_indirect()  argument
450 	__mdiobus_write(bus, phy_addr, MII_MMD_CTRL, devad);  in mmd_phy_indirect()
453 	__mdiobus_write(bus, phy_addr, MII_MMD_DATA, regnum);  in mmd_phy_indirect()
456 	__mdiobus_write(bus, phy_addr, MII_MMD_CTRL,  in mmd_phy_indirect()
461  * __phy_read_mmd - Convenience function for reading a register
474 		return -EINVAL;  in __phy_read_mmd()
476 	if (phydev->drv && phydev->drv->read_mmd) {  in __phy_read_mmd()
477 		val = phydev->drv->read_mmd(phydev, devad, regnum);  in __phy_read_mmd()
478 	} else if (phydev->is_c45) {  in __phy_read_mmd()
479 		val = __mdiobus_c45_read(phydev->mdio.bus, phydev->mdio.addr,  in __phy_read_mmd()
482 		struct mii_bus *bus = phydev->mdio.bus;  in __phy_read_mmd()  local
483 		int phy_addr = phydev->mdio.addr;  in __phy_read_mmd()
485 		mmd_phy_indirect(bus, phy_addr, devad, regnum);  in __phy_read_mmd()
488 		val = __mdiobus_read(bus, phy_addr, MII_MMD_DATA);  in __phy_read_mmd()
495  * phy_read_mmd - Convenience function for reading a register
516  * __phy_write_mmd - Convenience function for writing a register
530 		return -EINVAL;  in __phy_write_mmd()
532 	if (phydev->drv && phydev->drv->write_mmd) {  in __phy_write_mmd()
533 		ret = phydev->drv->write_mmd(phydev, devad, regnum, val);  in __phy_write_mmd()
534 	} else if (phydev->is_c45) {  in __phy_write_mmd()
535 		ret = __mdiobus_c45_write(phydev->mdio.bus, phydev->mdio.addr,  in __phy_write_mmd()
538 		struct mii_bus *bus = phydev->mdio.bus;  in __phy_write_mmd()  local
539 		int phy_addr = phydev->mdio.addr;  in __phy_write_mmd()
541 		mmd_phy_indirect(bus, phy_addr, devad, regnum);  in __phy_write_mmd()
544 		__mdiobus_write(bus, phy_addr, MII_MMD_DATA, val);  in __phy_write_mmd()
553  * phy_write_mmd - Convenience function for writing a register
575  * phy_modify_changed - Function for modifying a PHY register
582  * because the bus read/write functions may wait for an interrupt
600  * __phy_modify - Convenience function for modifying a PHY register
607  * because the bus read/write functions may wait for an interrupt
621  * phy_modify - Convenience function for modifying a given PHY register
628  * because the bus read/write functions may wait for an interrupt
644  * __phy_modify_mmd_changed - Function for modifying a register on MMD
676  * phy_modify_mmd_changed - Function for modifying a register on MMD
684  * because the bus read/write functions may wait for an interrupt
703  * __phy_modify_mmd - Convenience function for modifying a register on MMD
711  * because the bus read/write functions may wait for an interrupt
726  * phy_modify_mmd - Convenience function for modifying a register on MMD
734  * because the bus read/write functions may wait for an interrupt
752 …if (WARN_ONCE(!phydev->drv->read_page, "read_page callback not available, PHY driver not loaded?\n…  in __phy_read_page()
753 		return -EOPNOTSUPP;  in __phy_read_page()
755 	return phydev->drv->read_page(phydev);  in __phy_read_page()
760 …if (WARN_ONCE(!phydev->drv->write_page, "write_page callback not available, PHY driver not loaded?…  in __phy_write_page()
761 		return -EOPNOTSUPP;  in __phy_write_page()
763 	return phydev->drv->write_page(phydev, page);  in __phy_write_page()
767  * phy_save_page() - take the bus lock and save the current page
770  * Take the MDIO bus lock, and return the current page number. On error,
782  * phy_select_page() - take the bus lock, save the current page, and set a page
786  * Take the MDIO bus lock to protect against concurrent access, save the
811  * phy_restore_page() - restore the page register and release the bus lock
816  * Release the MDIO bus lock, restoring @oldpage if it is a valid page.
850  * phy_read_paged() - Convenience function for reading a paged register
870  * phy_write_paged() - Convenience function for writing a paged register
891  * phy_modify_paged_changed() - Function for modifying a paged register
914  * phy_modify_paged() - Convenience function for modifying a paged register