1 // SPDX-License-Identifier: GPL-2.0-only
12  * genphy_c45_setup_forced - configures a forced speed
20 	if (phydev->duplex != DUPLEX_FULL)  in genphy_c45_pma_setup_forced()
21 		return -EINVAL;  in genphy_c45_pma_setup_forced()
34 	 * in 802.3-2012 and 802.3-2015.  in genphy_c45_pma_setup_forced()
38 	switch (phydev->speed) {  in genphy_c45_pma_setup_forced()
48 		/* Assume 1000base-T */  in genphy_c45_pma_setup_forced()
53 		/* Assume 2.5Gbase-T */  in genphy_c45_pma_setup_forced()
58 		/* Assume 5Gbase-T */  in genphy_c45_pma_setup_forced()
63 		/* Assume 10Gbase-T */  in genphy_c45_pma_setup_forced()
67 		return -EINVAL;  in genphy_c45_pma_setup_forced()
83  * genphy_c45_an_config_aneg - configure advertisement registers
86  * Configure advertisement registers based on modes set in phydev->advertising
96 	linkmode_and(phydev->advertising, phydev->advertising,  in genphy_c45_an_config_aneg()
97 		     phydev->supported);  in genphy_c45_an_config_aneg()
101 	adv = linkmode_adv_to_mii_adv_t(phydev->advertising);  in genphy_c45_an_config_aneg()
112 	adv = linkmode_adv_to_mii_10gbt_adv_t(phydev->advertising);  in genphy_c45_an_config_aneg()
128  * genphy_c45_an_disable_aneg - disable auto-negotiation
131  * Disable auto-negotiation in the Clause 45 PHY. The link parameters
145  * genphy_c45_restart_aneg - Enable and restart auto-negotiation
148  * This assumes that the auto-negotiation MMD is present.
150  * Enable and restart auto-negotiation.
160  * genphy_c45_check_and_restart_aneg - Enable and restart auto-negotiation
164  * This assumes that the auto-negotiation MMD is present.
166  * Check, and restart auto-negotiation if needed.
190  * genphy_c45_aneg_done - return auto-negotiation complete status
193  * This assumes that the auto-negotiation MMD is present.
195  * Reads the status register from the auto-negotiation MMD, returning:
196  * - positive if auto-negotiation is complete
197  * - negative errno code on error
198  * - zero otherwise
209  * genphy_c45_read_link - read the overall link status from the MMDs
212  * Read the link status from the specified MMDs, and if they all indicate
213  * that the link is up, set phydev->link to 1.  If an error is encountered,
220 	bool link = true;  in genphy_c45_read_link()  local
222 	if (phydev->c45_ids.mmds_present & MDIO_DEVS_AN) {  in genphy_c45_read_link()
228 		 * link status and report link as down.  in genphy_c45_read_link()
231 			phydev->link = 0;  in genphy_c45_read_link()
236 	while (mmd_mask && link) {  in genphy_c45_read_link()
240 		/* The link state is latched low so that momentary link  in genphy_c45_read_link()
241 		 * drops can be detected. Do not double-read the status  in genphy_c45_read_link()
242 		 * in polling mode to detect such short link drops except  in genphy_c45_read_link()
243 		 * the link was already down.  in genphy_c45_read_link()
245 		if (!phy_polling_mode(phydev) || !phydev->link) {  in genphy_c45_read_link()
258 			link = false;  in genphy_c45_read_link()
261 	phydev->link = link;  in genphy_c45_read_link()
268  * genphy_c45_read_lpa - read the link partner advertisement and pause
271  * Read the Clause 45 defined base (7.19) and 10G (7.33) status registers,
272  * filling in the link partner advertisement, pause and asym_pause members
273  * in @phydev.  This assumes that the auto-negotiation MMD is present, and
275  * to fill in the remainder of the link partner advert from vendor registers.
287 				   phydev->lp_advertising);  in genphy_c45_read_lpa()
288 		mii_10gbt_stat_mod_linkmode_lpa_t(phydev->lp_advertising, 0);  in genphy_c45_read_lpa()
289 		mii_adv_mod_linkmode_adv_t(phydev->lp_advertising, 0);  in genphy_c45_read_lpa()
290 		phydev->pause = 0;  in genphy_c45_read_lpa()
291 		phydev->asym_pause = 0;  in genphy_c45_read_lpa()
296 	linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->lp_advertising,  in genphy_c45_read_lpa()
299 	/* Read the link partner's base page advertisement */  in genphy_c45_read_lpa()
304 	mii_adv_mod_linkmode_adv_t(phydev->lp_advertising, val);  in genphy_c45_read_lpa()
305 	phydev->pause = val & LPA_PAUSE_CAP ? 1 : 0;  in genphy_c45_read_lpa()
306 	phydev->asym_pause = val & LPA_PAUSE_ASYM ? 1 : 0;  in genphy_c45_read_lpa()
308 	/* Read the link partner's 10G advertisement */  in genphy_c45_read_lpa()
313 	mii_10gbt_stat_mod_linkmode_lpa_t(phydev->lp_advertising, val);  in genphy_c45_read_lpa()
320  * genphy_c45_read_pma - read link speed etc from PMA
327 	linkmode_zero(phydev->lp_advertising);  in genphy_c45_read_pma()
335 		phydev->speed = SPEED_10;  in genphy_c45_read_pma()
338 		phydev->speed = SPEED_100;  in genphy_c45_read_pma()
341 		phydev->speed = SPEED_1000;  in genphy_c45_read_pma()
344 		phydev->speed = SPEED_2500;  in genphy_c45_read_pma()
347 		phydev->speed = SPEED_5000;  in genphy_c45_read_pma()
350 		phydev->speed = SPEED_10000;  in genphy_c45_read_pma()
353 		phydev->speed = SPEED_UNKNOWN;  in genphy_c45_read_pma()
357 	phydev->duplex = DUPLEX_FULL;  in genphy_c45_read_pma()
364  * genphy_c45_read_mdix - read mdix status from PMA
371 	if (phydev->speed == SPEED_10000) {  in genphy_c45_read_mdix()
379 			phydev->mdix = ETH_TP_MDI;  in genphy_c45_read_mdix()
383 			phydev->mdix = ETH_TP_MDI_X;  in genphy_c45_read_mdix()
387 			phydev->mdix = ETH_TP_MDI_INVALID;  in genphy_c45_read_mdix()
397  * genphy_c45_pma_read_abilities - read supported link modes from PMA
400  * Read the supported link modes from the PMA Status 2 (1.8) register. If bit
402  * PMA Extended Abilities (1.11) register, indicating 1000BASET an 10G related
404  * in the 2.5G/5G PMA Extended register (1.21), indicating if 2.5GBASET and
411 	linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported);  in genphy_c45_pma_read_abilities()
412 	if (phydev->c45_ids.mmds_present & MDIO_DEVS_AN) {  in genphy_c45_pma_read_abilities()
419 					 phydev->supported);  in genphy_c45_pma_read_abilities()
427 			 phydev->supported,  in genphy_c45_pma_read_abilities()
431 			 phydev->supported,  in genphy_c45_pma_read_abilities()
435 			 phydev->supported,  in genphy_c45_pma_read_abilities()
444 				 phydev->supported,  in genphy_c45_pma_read_abilities()
447 				 phydev->supported,  in genphy_c45_pma_read_abilities()
450 				 phydev->supported,  in genphy_c45_pma_read_abilities()
453 				 phydev->supported,  in genphy_c45_pma_read_abilities()
456 				 phydev->supported,  in genphy_c45_pma_read_abilities()
459 				 phydev->supported,  in genphy_c45_pma_read_abilities()
463 				 phydev->supported,  in genphy_c45_pma_read_abilities()
466 				 phydev->supported,  in genphy_c45_pma_read_abilities()
470 				 phydev->supported,  in genphy_c45_pma_read_abilities()
473 				 phydev->supported,  in genphy_c45_pma_read_abilities()
483 					 phydev->supported,  in genphy_c45_pma_read_abilities()
487 					 phydev->supported,  in genphy_c45_pma_read_abilities()
497  * genphy_c45_read_status - read PHY status
510 	phydev->speed = SPEED_UNKNOWN;  in genphy_c45_read_status()
511 	phydev->duplex = DUPLEX_UNKNOWN;  in genphy_c45_read_status()
512 	phydev->pause = 0;  in genphy_c45_read_status()
513 	phydev->asym_pause = 0;  in genphy_c45_read_status()
515 	if (phydev->autoneg == AUTONEG_ENABLE) {  in genphy_c45_read_status()
530  * genphy_c45_config_aneg - restart auto-negotiation or forced setup
533  * Description: If auto-negotiation is enabled, we configure the
534  *   advertising, and then restart auto-negotiation.  If it is not
542 	if (phydev->autoneg == AUTONEG_DISABLE)  in genphy_c45_config_aneg()