1 // SPDX-License-Identifier: GPL-2.0-only
12  * genphy_c45_baset1_able - checks if the PMA has BASE-T1 extended abilities
19 	if (phydev->pma_extable == -ENODATA) {  in genphy_c45_baset1_able()
24 		phydev->pma_extable = val;  in genphy_c45_baset1_able()
27 	return !!(phydev->pma_extable & MDIO_PMA_EXTABLE_BT1);  in genphy_c45_baset1_able()
31  * genphy_c45_pma_can_sleep - checks if the PMA have sleep support
46  * genphy_c45_pma_resume - wakes up the PMA module
52 		return -EOPNOTSUPP;  in genphy_c45_pma_resume()
60  * genphy_c45_pma_suspend - suspends the PMA module
66 		return -EOPNOTSUPP;  in genphy_c45_pma_suspend()
74  * genphy_c45_pma_baset1_setup_master_slave - configures forced master/slave
82 	switch (phydev->master_slave_set) {  in genphy_c45_pma_baset1_setup_master_slave()
95 		return -EOPNOTSUPP;  in genphy_c45_pma_baset1_setup_master_slave()
104  * genphy_c45_pma_setup_forced - configures a forced speed
112 	if (phydev->duplex != DUPLEX_FULL)  in genphy_c45_pma_setup_forced()
113 		return -EINVAL;  in genphy_c45_pma_setup_forced()
126 	 * in 802.3-2012 and 802.3-2015.  in genphy_c45_pma_setup_forced()
130 	switch (phydev->speed) {  in genphy_c45_pma_setup_forced()
143 		/* Assume 1000base-T */  in genphy_c45_pma_setup_forced()
148 		/* Assume 2.5Gbase-T */  in genphy_c45_pma_setup_forced()
153 		/* Assume 5Gbase-T */  in genphy_c45_pma_setup_forced()
158 		/* Assume 10Gbase-T */  in genphy_c45_pma_setup_forced()
162 		return -EINVAL;  in genphy_c45_pma_setup_forced()
184  * The preference is set in the BIT(4) of BASE-T1 AN
186  * is forced or not, it is set in the BIT(12) of BASE-T1
188  * Sets 10BASE-T1L Ability BIT(14) in BASE-T1 autonegotiation
202 	switch (phydev->master_slave_set) {  in genphy_c45_baset1_an_config_aneg()
222 		return -EOPNOTSUPP;  in genphy_c45_baset1_an_config_aneg()
225 	adv_l |= linkmode_adv_to_mii_t1_adv_l_t(phydev->advertising);  in genphy_c45_baset1_an_config_aneg()
234 	adv_m |= linkmode_adv_to_mii_t1_adv_m_t(phydev->advertising);  in genphy_c45_baset1_an_config_aneg()
247  * genphy_c45_an_config_aneg - configure advertisement registers
250  * Configure advertisement registers based on modes set in phydev->advertising
260 	linkmode_and(phydev->advertising, phydev->advertising,  in genphy_c45_an_config_aneg()
261 		     phydev->supported);  in genphy_c45_an_config_aneg()
268 	adv = linkmode_adv_to_mii_adv_t(phydev->advertising);  in genphy_c45_an_config_aneg()
279 	adv = linkmode_adv_to_mii_10gbt_adv_t(phydev->advertising);  in genphy_c45_an_config_aneg()
295  * genphy_c45_an_disable_aneg - disable auto-negotiation
298  * Disable auto-negotiation in the Clause 45 PHY. The link parameters
316  * genphy_c45_restart_aneg - Enable and restart auto-negotiation
319  * This assumes that the auto-negotiation MMD is present.
321  * Enable and restart auto-negotiation.
336  * genphy_c45_check_and_restart_aneg - Enable and restart auto-negotiation
340  * This assumes that the auto-negotiation MMD is present.
342  * Check, and restart auto-negotiation if needed.
370  * genphy_c45_aneg_done - return auto-negotiation complete status
373  * This assumes that the auto-negotiation MMD is present.
375  * Reads the status register from the auto-negotiation MMD, returning:
376  * - positive if auto-negotiation is complete
377  * - negative errno code on error
378  * - zero otherwise
395  * genphy_c45_read_link - read the overall link status from the MMDs
398  * Read the link status from the specified MMDs, and if they all indicate
399  * that the link is up, set phydev->link to 1.  If an error is encountered,
406 	bool link = true;  in genphy_c45_read_link()  local
408 	if (phydev->c45_ids.mmds_present & MDIO_DEVS_AN) {  in genphy_c45_read_link()
414 		 * link status and report link as down.  in genphy_c45_read_link()
417 			phydev->link = 0;  in genphy_c45_read_link()
422 	while (mmd_mask && link) {  in genphy_c45_read_link()
426 		/* The link state is latched low so that momentary link  in genphy_c45_read_link()
427 		 * drops can be detected. Do not double-read the status  in genphy_c45_read_link()
428 		 * in polling mode to detect such short link drops except  in genphy_c45_read_link()
429 		 * the link was already down.  in genphy_c45_read_link()
431 		if (!phy_polling_mode(phydev) || !phydev->link) {  in genphy_c45_read_link()
444 			link = false;  in genphy_c45_read_link()
447 	phydev->link = link;  in genphy_c45_read_link()
453 /* Read the Clause 45 defined BASE-T1 AN (7.513) status register to check
454  * if autoneg is complete. If so read the BASE-T1 Autonegotiation
455  * Advertisement registers filling in the link partner advertisement,
467 		linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->lp_advertising);  in genphy_c45_baset1_read_lpa()
468 		mii_t1_adv_l_mod_linkmode_t(phydev->lp_advertising, 0);  in genphy_c45_baset1_read_lpa()
469 		mii_t1_adv_m_mod_linkmode_t(phydev->lp_advertising, 0);  in genphy_c45_baset1_read_lpa()
471 		phydev->pause = 0;  in genphy_c45_baset1_read_lpa()
472 		phydev->asym_pause = 0;  in genphy_c45_baset1_read_lpa()
477 	linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->lp_advertising, 1);  in genphy_c45_baset1_read_lpa()
483 	mii_t1_adv_l_mod_linkmode_t(phydev->lp_advertising, val);  in genphy_c45_baset1_read_lpa()
484 	phydev->pause = val & MDIO_AN_T1_ADV_L_PAUSE_CAP ? 1 : 0;  in genphy_c45_baset1_read_lpa()
485 	phydev->asym_pause = val & MDIO_AN_T1_ADV_L_PAUSE_ASYM ? 1 : 0;  in genphy_c45_baset1_read_lpa()
491 	mii_t1_adv_m_mod_linkmode_t(phydev->lp_advertising, val);  in genphy_c45_baset1_read_lpa()
497  * genphy_c45_read_lpa - read the link partner advertisement and pause
500  * Read the Clause 45 defined base (7.19) and 10G (7.33) status registers,
501  * filling in the link partner advertisement, pause and asym_pause members
502  * in @phydev.  This assumes that the auto-negotiation MMD is present, and
504  * to fill in the remainder of the link partner advert from vendor registers.
519 				   phydev->lp_advertising);  in genphy_c45_read_lpa()
520 		mii_10gbt_stat_mod_linkmode_lpa_t(phydev->lp_advertising, 0);  in genphy_c45_read_lpa()
521 		mii_adv_mod_linkmode_adv_t(phydev->lp_advertising, 0);  in genphy_c45_read_lpa()
522 		phydev->pause = 0;  in genphy_c45_read_lpa()
523 		phydev->asym_pause = 0;  in genphy_c45_read_lpa()
528 	linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->lp_advertising,  in genphy_c45_read_lpa()
531 	/* Read the link partner's base page advertisement */  in genphy_c45_read_lpa()
536 	mii_adv_mod_linkmode_adv_t(phydev->lp_advertising, val);  in genphy_c45_read_lpa()
537 	phydev->pause = val & LPA_PAUSE_CAP ? 1 : 0;  in genphy_c45_read_lpa()
538 	phydev->asym_pause = val & LPA_PAUSE_ASYM ? 1 : 0;  in genphy_c45_read_lpa()
540 	/* Read the link partner's 10G advertisement */  in genphy_c45_read_lpa()
545 	mii_10gbt_stat_mod_linkmode_lpa_t(phydev->lp_advertising, val);  in genphy_c45_read_lpa()
552  * genphy_c45_pma_baset1_read_master_slave - read forced master/slave
560 	phydev->master_slave_state = MASTER_SLAVE_STATE_UNKNOWN;  in genphy_c45_pma_baset1_read_master_slave()
561 	phydev->master_slave_get = MASTER_SLAVE_CFG_UNKNOWN;  in genphy_c45_pma_baset1_read_master_slave()
568 		phydev->master_slave_get = MASTER_SLAVE_CFG_MASTER_FORCE;  in genphy_c45_pma_baset1_read_master_slave()
569 		phydev->master_slave_state = MASTER_SLAVE_STATE_MASTER;  in genphy_c45_pma_baset1_read_master_slave()
571 		phydev->master_slave_get = MASTER_SLAVE_CFG_SLAVE_FORCE;  in genphy_c45_pma_baset1_read_master_slave()
572 		phydev->master_slave_state = MASTER_SLAVE_STATE_SLAVE;  in genphy_c45_pma_baset1_read_master_slave()
580  * genphy_c45_read_pma - read link speed etc from PMA
587 	linkmode_zero(phydev->lp_advertising);  in genphy_c45_read_pma()
595 		phydev->speed = SPEED_10;  in genphy_c45_read_pma()
598 		phydev->speed = SPEED_100;  in genphy_c45_read_pma()
601 		phydev->speed = SPEED_1000;  in genphy_c45_read_pma()
604 		phydev->speed = SPEED_2500;  in genphy_c45_read_pma()
607 		phydev->speed = SPEED_5000;  in genphy_c45_read_pma()
610 		phydev->speed = SPEED_10000;  in genphy_c45_read_pma()
613 		phydev->speed = SPEED_UNKNOWN;  in genphy_c45_read_pma()
617 	phydev->duplex = DUPLEX_FULL;  in genphy_c45_read_pma()
630  * genphy_c45_read_mdix - read mdix status from PMA
637 	if (phydev->speed == SPEED_10000) {  in genphy_c45_read_mdix()
645 			phydev->mdix = ETH_TP_MDI;  in genphy_c45_read_mdix()
649 			phydev->mdix = ETH_TP_MDI_X;  in genphy_c45_read_mdix()
653 			phydev->mdix = ETH_TP_MDI_INVALID;  in genphy_c45_read_mdix()
663  * genphy_c45_pma_read_abilities - read supported link modes from PMA
666  * Read the supported link modes from the PMA Status 2 (1.8) register. If bit
668  * PMA Extended Abilities (1.11) register, indicating 1000BASET an 10G related
670  * in the 2.5G/5G PMA Extended register (1.21), indicating if 2.5GBASET and
677 	linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);  in genphy_c45_pma_read_abilities()
678 	if (phydev->c45_ids.mmds_present & MDIO_DEVS_AN) {  in genphy_c45_pma_read_abilities()
685 					 phydev->supported);  in genphy_c45_pma_read_abilities()
693 			 phydev->supported,  in genphy_c45_pma_read_abilities()
697 			 phydev->supported,  in genphy_c45_pma_read_abilities()
701 			 phydev->supported,  in genphy_c45_pma_read_abilities()
710 				 phydev->supported,  in genphy_c45_pma_read_abilities()
713 				 phydev->supported,  in genphy_c45_pma_read_abilities()
716 				 phydev->supported,  in genphy_c45_pma_read_abilities()
719 				 phydev->supported,  in genphy_c45_pma_read_abilities()
722 				 phydev->supported,  in genphy_c45_pma_read_abilities()
725 				 phydev->supported,  in genphy_c45_pma_read_abilities()
729 				 phydev->supported,  in genphy_c45_pma_read_abilities()
732 				 phydev->supported,  in genphy_c45_pma_read_abilities()
736 				 phydev->supported,  in genphy_c45_pma_read_abilities()
739 				 phydev->supported,  in genphy_c45_pma_read_abilities()
749 					 phydev->supported,  in genphy_c45_pma_read_abilities()
753 					 phydev->supported,  in genphy_c45_pma_read_abilities()
763 					 phydev->supported,  in genphy_c45_pma_read_abilities()
771 					 phydev->supported,  in genphy_c45_pma_read_abilities()
781  * The preference is read from the BIT(4) of BASE-T1 AN
783  * is forced or not, it is read from BASE-T1 AN advertisement
791 	phydev->master_slave_get = MASTER_SLAVE_CFG_UNKNOWN;  in genphy_c45_baset1_read_status()
792 	phydev->master_slave_state = MASTER_SLAVE_STATE_UNKNOWN;  in genphy_c45_baset1_read_status()
804 			phydev->master_slave_get = MASTER_SLAVE_CFG_MASTER_FORCE;  in genphy_c45_baset1_read_status()
806 			phydev->master_slave_get = MASTER_SLAVE_CFG_SLAVE_FORCE;  in genphy_c45_baset1_read_status()
809 			phydev->master_slave_get = MASTER_SLAVE_CFG_MASTER_PREFERRED;  in genphy_c45_baset1_read_status()
811 			phydev->master_slave_get = MASTER_SLAVE_CFG_SLAVE_PREFERRED;  in genphy_c45_baset1_read_status()
819  * genphy_c45_read_status - read PHY status
832 	phydev->speed = SPEED_UNKNOWN;  in genphy_c45_read_status()
833 	phydev->duplex = DUPLEX_UNKNOWN;  in genphy_c45_read_status()
834 	phydev->pause = 0;  in genphy_c45_read_status()
835 	phydev->asym_pause = 0;  in genphy_c45_read_status()
837 	if (phydev->autoneg == AUTONEG_ENABLE) {  in genphy_c45_read_status()
858  * genphy_c45_config_aneg - restart auto-negotiation or forced setup
861  * Description: If auto-negotiation is enabled, we configure the
862  *   advertising, and then restart auto-negotiation.  If it is not
870 	if (phydev->autoneg == AUTONEG_DISABLE)  in genphy_c45_config_aneg()
900  * genphy_c45_fast_retrain - configure fast retrain registers
904  * Description: If fast-retrain is enabled, we configure PHY as
917 	if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->supported)) {  in genphy_c45_fast_retrain()