1 // SPDX-License-Identifier: GPL-2.0+
10 #include "phylib-internal.h"
11 #include "phy-caps.h"
14  * phy_speed_to_str - Return a string representing the PHY link speed
61 		return "Unsupported (update phy-core.c)";  in phy_speed_to_str()
67  * phy_duplex_to_str - Return string describing the duplex
79 	return "Unsupported (update phy-core.c)";  in phy_duplex_to_str()
84  * phy_rate_matching_to_str - Return a string describing the rate matching
98 		return "open-loop";  in phy_rate_matching_to_str()
100 	return "Unsupported (update phy-core.c)";  in phy_rate_matching_to_str()
105  * phy_interface_num_ports - Return the number of links that can be carried by
106  *			     a given MAC-PHY physical link. Returns 0 if this is
166 	phy_caps_linkmode_max_speed(max_speed, phydev->supported);  in __set_phy_supported()
170  * phy_set_max_speed - Set the maximum speed the PHY should support
189 	struct device_node *node = phydev->mdio.dev.of_node;  in of_set_phy_supported()
198 	if (!of_property_read_u32(node, "max-speed", &max_speed))  in of_set_phy_supported()
204 	struct device_node *node = phydev->mdio.dev.of_node;  in of_set_phy_eee_broken()
205 	unsigned long *modes = phydev->eee_disabled_modes;  in of_set_phy_eee_broken()
212 	if (of_property_read_bool(node, "eee-broken-100tx"))  in of_set_phy_eee_broken()
214 	if (of_property_read_bool(node, "eee-broken-1000t"))  in of_set_phy_eee_broken()
216 	if (of_property_read_bool(node, "eee-broken-10gt"))  in of_set_phy_eee_broken()
218 	if (of_property_read_bool(node, "eee-broken-1000kx"))  in of_set_phy_eee_broken()
220 	if (of_property_read_bool(node, "eee-broken-10gkx4"))  in of_set_phy_eee_broken()
222 	if (of_property_read_bool(node, "eee-broken-10gkr"))  in of_set_phy_eee_broken()
227  * of_set_phy_timing_role - Set the master/slave mode of the PHY
235 	struct device_node *node = phydev->mdio.dev.of_node;  in of_set_phy_timing_role()
244 	if (of_property_read_string(node, "timing-role", &master))  in of_set_phy_timing_role()
247 	if (strcmp(master, "forced-master") == 0)  in of_set_phy_timing_role()
248 		phydev->master_slave_set = MASTER_SLAVE_CFG_MASTER_FORCE;  in of_set_phy_timing_role()
249 	else if (strcmp(master, "forced-slave") == 0)  in of_set_phy_timing_role()
250 		phydev->master_slave_set = MASTER_SLAVE_CFG_SLAVE_FORCE;  in of_set_phy_timing_role()
251 	else if (strcmp(master, "preferred-master") == 0)  in of_set_phy_timing_role()
252 		phydev->master_slave_set = MASTER_SLAVE_CFG_MASTER_PREFERRED;  in of_set_phy_timing_role()
253 	else if (strcmp(master, "preferred-slave") == 0)  in of_set_phy_timing_role()
254 		phydev->master_slave_set = MASTER_SLAVE_CFG_SLAVE_PREFERRED;  in of_set_phy_timing_role()
256 		phydev_warn(phydev, "Unknown master-slave mode %s\n", master);  in of_set_phy_timing_role()
260  * phy_resolve_aneg_pause - Determine pause autoneg results
271 	if (phydev->duplex == DUPLEX_FULL) {  in phy_resolve_aneg_pause()
272 		phydev->pause = linkmode_test_bit(ETHTOOL_LINK_MODE_Pause_BIT,  in phy_resolve_aneg_pause()
273 						  phydev->lp_advertising);  in phy_resolve_aneg_pause()
274 		phydev->asym_pause = linkmode_test_bit(  in phy_resolve_aneg_pause()
276 			phydev->lp_advertising);  in phy_resolve_aneg_pause()
282  * phy_resolve_aneg_linkmode - resolve the advertisements into PHY settings
291 	__ETHTOOL_DECLARE_LINK_MODE_MASK(common);  in phy_resolve_aneg_linkmode()
294 	linkmode_and(common, phydev->lp_advertising, phydev->advertising);  in phy_resolve_aneg_linkmode()
296 	c = phy_caps_lookup_by_linkmode(common);  in phy_resolve_aneg_linkmode()
298 		phydev->speed = c->speed;  in phy_resolve_aneg_linkmode()
299 		phydev->duplex = c->duplex;  in phy_resolve_aneg_linkmode()
307  * phy_check_downshift - check whether downshift occurred
313  * read_status callback and sets phydev->speed to the actual link speed.
317 	__ETHTOOL_DECLARE_LINK_MODE_MASK(common);  in phy_check_downshift()
321 	phydev->downshifted_rate = 0;  in phy_check_downshift()
323 	if (phydev->autoneg == AUTONEG_DISABLE ||  in phy_check_downshift()
324 	    phydev->speed == SPEED_UNKNOWN)  in phy_check_downshift()
327 	linkmode_and(common, phydev->lp_advertising, phydev->advertising);  in phy_check_downshift()
329 	c = phy_caps_lookup_by_linkmode(common);  in phy_check_downshift()
331 		speed = c->speed;  in phy_check_downshift()
333 	if (speed == SPEED_UNKNOWN || phydev->speed >= speed)  in phy_check_downshift()
337 		    phy_speed_to_str(speed), phy_speed_to_str(phydev->speed));  in phy_check_downshift()
339 	phydev->downshifted_rate = 1;  in phy_check_downshift()
344 	__ETHTOOL_DECLARE_LINK_MODE_MASK(common);  in phy_resolve_min_speed()
347 	linkmode_and(common, phydev->lp_advertising, phydev->advertising);  in phy_resolve_min_speed()
349 	c = phy_caps_lookup_by_linkmode_rev(common, fdx_only);  in phy_resolve_min_speed()
351 		return c->speed;  in phy_resolve_min_speed()
361 		return -EINVAL;  in phy_speed_down_core()
363 	phy_caps_linkmode_max_speed(min_common_speed, phydev->advertising);  in phy_speed_down_core()
407  * __phy_read_mmd - Convenience function for reading a register
413  * Same rules as for __phy_read();
418 		return -EINVAL;  in __phy_read_mmd()
420 	if (phydev->drv && phydev->drv->read_mmd)  in __phy_read_mmd()
421 		return phydev->drv->read_mmd(phydev, devad, regnum);  in __phy_read_mmd()
423 	return mmd_phy_read(phydev->mdio.bus, phydev->mdio.addr,  in __phy_read_mmd()
424 			    phydev->is_c45, devad, regnum);  in __phy_read_mmd()
429  * phy_read_mmd - Convenience function for reading a register
435  * Same rules as for phy_read();
450  * __phy_write_mmd - Convenience function for writing a register
457  * Same rules as for __phy_write();
462 		return -EINVAL;  in __phy_write_mmd()
464 	if (phydev->drv && phydev->drv->write_mmd)  in __phy_write_mmd()
465 		return phydev->drv->write_mmd(phydev, devad, regnum, val);  in __phy_write_mmd()
467 	return mmd_phy_write(phydev->mdio.bus, phydev->mdio.addr,  in __phy_write_mmd()
468 			     phydev->is_c45, devad, regnum, val);  in __phy_write_mmd()
473  * phy_write_mmd - Convenience function for writing a register
480  * Same rules as for phy_write();
495  * phy_modify_changed - Function for modifying a PHY register
520  * __phy_modify - Convenience function for modifying a PHY register
541  * phy_modify - Convenience function for modifying a given PHY register
564  * __phy_modify_mmd_changed - Function for modifying a register on MMD
596  * phy_modify_mmd_changed - Function for modifying a register on MMD
623  * __phy_modify_mmd - Convenience function for modifying a register on MMD
646  * phy_modify_mmd - Convenience function for modifying a register on MMD
672 …if (WARN_ONCE(!phydev->drv->read_page, "read_page callback not available, PHY driver not loaded?\n…  in __phy_read_page()
673 		return -EOPNOTSUPP;  in __phy_read_page()
675 	return phydev->drv->read_page(phydev);  in __phy_read_page()
680 …if (WARN_ONCE(!phydev->drv->write_page, "write_page callback not available, PHY driver not loaded?…  in __phy_write_page()
681 		return -EOPNOTSUPP;  in __phy_write_page()
683 	return phydev->drv->write_page(phydev, page);  in __phy_write_page()
687  * phy_save_page() - take the bus lock and save the current page
702  * phy_select_page() - take the bus lock, save the current page, and set a page
731  * phy_restore_page() - restore the page register and release the bus lock
770  * phy_read_paged() - Convenience function for reading a paged register
775  * Same rules as for phy_read().
790  * phy_write_paged() - Convenience function for writing a paged register
796  * Same rules as for phy_write().
811  * phy_modify_paged_changed() - Function for modifying a paged register
834  * phy_modify_paged() - Convenience function for modifying a paged register
841  * Same rules as for phy_read() and phy_write().