51 	struct phylink_pcs *pcs;  member
651 	struct phylink_pcs *pcs = NULL;  in phylink_validate_mac_and_pcs()  local
655 	/* Get the PCS for this interface mode */  in phylink_validate_mac_and_pcs()
657 		pcs = pl->mac_ops->mac_select_pcs(pl->config, state->interface);  in phylink_validate_mac_and_pcs()
658 		if (IS_ERR(pcs))  in phylink_validate_mac_and_pcs()
659 			return PTR_ERR(pcs);  in phylink_validate_mac_and_pcs()
662 	if (pcs) {  in phylink_validate_mac_and_pcs()
663 		/* The PCS, if present, must be setup before phylink_create()  in phylink_validate_mac_and_pcs()
667 		if (!pcs->ops) {  in phylink_validate_mac_and_pcs()
668 			phylink_err(pl, "interface %s: uninitialised PCS\n",  in phylink_validate_mac_and_pcs()
674 		/* Validate the link parameters with the PCS */  in phylink_validate_mac_and_pcs()
675 		if (pcs->ops->pcs_validate) {  in phylink_validate_mac_and_pcs()
676 			ret = pcs->ops->pcs_validate(pcs, supported, state);  in phylink_validate_mac_and_pcs()
974 static void phylink_pcs_pre_config(struct phylink_pcs *pcs,  in phylink_pcs_pre_config()  argument
977 	if (pcs && pcs->ops->pcs_pre_config)  in phylink_pcs_pre_config()
978 		pcs->ops->pcs_pre_config(pcs, interface);  in phylink_pcs_pre_config()
981 static int phylink_pcs_post_config(struct phylink_pcs *pcs,  in phylink_pcs_post_config()  argument
986 	if (pcs && pcs->ops->pcs_post_config)  in phylink_pcs_post_config()
987 		err = pcs->ops->pcs_post_config(pcs, interface);  in phylink_pcs_post_config()
992 static void phylink_pcs_disable(struct phylink_pcs *pcs)  in phylink_pcs_disable()  argument
994 	if (pcs && pcs->ops->pcs_disable)  in phylink_pcs_disable()
995 		pcs->ops->pcs_disable(pcs);  in phylink_pcs_disable()
998 static int phylink_pcs_enable(struct phylink_pcs *pcs)  in phylink_pcs_enable()  argument
1002 	if (pcs && pcs->ops->pcs_enable)  in phylink_pcs_enable()
1003 		err = pcs->ops->pcs_enable(pcs);  in phylink_pcs_enable()
1008 static int phylink_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,  in phylink_pcs_config()  argument
1012 	if (!pcs)  in phylink_pcs_config()
1015 	return pcs->ops->pcs_config(pcs, neg_mode, state->interface,  in phylink_pcs_config()
1019 static void phylink_pcs_link_up(struct phylink_pcs *pcs, unsigned int neg_mode,  in phylink_pcs_link_up()  argument
1023 	if (pcs && pcs->ops->pcs_link_up)  in phylink_pcs_link_up()
1024 		pcs->ops->pcs_link_up(pcs, neg_mode, interface, speed, duplex);  in phylink_pcs_link_up()
1035 	if (pl->pcs && pl->pcs->poll && pl->cfg_link_an_mode == MLO_AN_INBAND)  in phylink_pcs_poll_start()
1039 int phylink_pcs_pre_init(struct phylink *pl, struct phylink_pcs *pcs)  in phylink_pcs_pre_init()  argument
1043 	/* Signal to PCS driver that MAC requires RX clock for init */  in phylink_pcs_pre_init()
1045 		pcs->rxc_always_on = true;  in phylink_pcs_pre_init()
1047 	if (pcs->ops->pcs_pre_init)  in phylink_pcs_pre_init()
1048 		ret = pcs->ops->pcs_pre_init(pcs);  in phylink_pcs_pre_init()
1079 	if (pl->pcs && linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,  in phylink_pcs_an_restart()
1083 		pl->pcs->ops->pcs_an_restart(pl->pcs);  in phylink_pcs_an_restart()
1087  * phylink_pcs_neg_mode() - helper to determine PCS inband mode
1092  * Determines the negotiation mode to be used by the PCS, and returns
1102  * Note: this is for cases where the PCS itself is involved in negotiation
1156 	struct phylink_pcs *pcs = NULL;  in phylink_major_config()  local
1169 		pcs = pl->mac_ops->mac_select_pcs(pl->config, state->interface);  in phylink_major_config()
1170 		if (IS_ERR(pcs)) {  in phylink_major_config()
1173 				    pcs);  in phylink_major_config()
1177 		pcs_changed = pl->pcs != pcs;  in phylink_major_config()
1192 	/* If we have a new PCS, switch to the new PCS after preparing the MAC  in phylink_major_config()
1196 		phylink_pcs_disable(pl->pcs);  in phylink_major_config()
1198 		if (pl->pcs)  in phylink_major_config()
1199 			pl->pcs->phylink = NULL;  in phylink_major_config()
1201 		pcs->phylink = pl;  in phylink_major_config()
1203 		pl->pcs = pcs;  in phylink_major_config()
1206 	if (pl->pcs)  in phylink_major_config()
1207 		phylink_pcs_pre_config(pl->pcs, state->interface);  in phylink_major_config()
1211 	if (pl->pcs)  in phylink_major_config()
1212 		phylink_pcs_post_config(pl->pcs, state->interface);  in phylink_major_config()
1215 		phylink_pcs_enable(pl->pcs);  in phylink_major_config()
1218 	if (pl->pcs && pl->pcs->neg_mode)  in phylink_major_config()
1221 	err = phylink_pcs_config(pl->pcs, neg_mode, state,  in phylink_major_config()
1251  * If we have a separate PCS, we only need to call its pcs_config() method,
1269 	/* Recompute the PCS neg mode */  in phylink_change_inband_advert()
1275 	if (pl->pcs->neg_mode)  in phylink_change_inband_advert()
1278 	/* Modern PCS-based method; update the advert at the PCS, and  in phylink_change_inband_advert()
1282 	ret = phylink_pcs_config(pl->pcs, neg_mode, &pl->link_config,  in phylink_change_inband_advert()
1313 	if (pl->pcs)  in phylink_mac_pcs_get_state()
1314 		pl->pcs->ops->pcs_get_state(pl->pcs, state);  in phylink_mac_pcs_get_state()
1414 	if (pl->pcs && pl->pcs->neg_mode)  in phylink_link_up()
1417 	phylink_pcs_link_up(pl->pcs, neg_mode, pl->cur_interface, speed,  in phylink_link_up()
1475 		/* The PCS may have a latching link-fail indicator. If the link  in phylink_resolve()
1477 		 * Otherwise, re-read the PCS state to get the current status  in phylink_resolve()
2149  * phylink_pcs_change() - notify phylink of a change to PCS link state
2150  * @pcs: pointer to &struct phylink_pcs
2153  * The PCS driver should call this when the state of its link changes
2159 void phylink_pcs_change(struct phylink_pcs *pcs, bool up)  in phylink_pcs_change()  argument
2161 	struct phylink *pl = pcs->phylink;  in phylink_pcs_change()
2164 		phylink_link_changed(pl, up, "pcs");  in phylink_pcs_change()
2273 	phylink_pcs_disable(pl->pcs);  in phylink_stop()
2496 		/* The MAC is reporting the link results from its own PCS  in phylink_ethtool_ksettings_get()
3280 	/* Find the union of the supported interfaces by the PCS/MAC and  in phylink_sfp_config_optical()
3549  * phylink_decode_usxgmii_word() - decode the USXGMII word from a MAC PCS
3553  * Helper for MAC PCS supporting the USXGMII protocol and the auto-negotiation
3592  * phylink_decode_usgmii_word() - decode the USGMII word from a MAC PCS
3596  * Helper for MAC PCS supporting the USGMII protocol and the auto-negotiation
3627  * phylink_mii_c22_pcs_decode_state() - Decode MAC PCS state from MII registers
3632  * Helper for MAC PCS supporting the 802.3 clause 22 register set for
3677  * phylink_mii_c22_pcs_get_state() - read the MAC PCS state
3678  * @pcs: a pointer to a &struct mdio_device.
3681  * Helper for MAC PCS supporting the 802.3 clause 22 register set for
3684  * Read the MAC PCS state from the MII device configured in @config and
3690 void phylink_mii_c22_pcs_get_state(struct mdio_device *pcs,  in phylink_mii_c22_pcs_get_state()  argument
3695 	bmsr = mdiodev_read(pcs, MII_BMSR);  in phylink_mii_c22_pcs_get_state()
3696 	lpa = mdiodev_read(pcs, MII_LPA);  in phylink_mii_c22_pcs_get_state()
3707  * phylink_mii_c22_pcs_encode_advertisement() - configure the clause 37 PCS
3712  * Helper for MAC PCS supporting the 802.3 clause 22 register set for
3715  * Encode the clause 37 PCS advertisement as specified by @interface and
3747  * phylink_mii_c22_pcs_config() - configure clause 22 PCS
3748  * @pcs: a pointer to a &struct mdio_device.
3751  * @neg_mode: PCS negotiation mode
3753  * Configure a Clause 22 PCS PHY with the appropriate negotiation
3758 int phylink_mii_c22_pcs_config(struct mdio_device *pcs,  in phylink_mii_c22_pcs_config()  argument
3769 		ret = mdiobus_modify_changed(pcs->bus, pcs->addr,  in phylink_mii_c22_pcs_config()
3782 	ret = mdiodev_modify(pcs, MII_BMCR, BMCR_ANENABLE | BMCR_ISOLATE, bmcr);  in phylink_mii_c22_pcs_config()
3792  * @pcs: a pointer to a &struct mdio_device.
3794  * Helper for MAC PCS supporting the 802.3 clause 22 register set for
3801 void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs)  in phylink_mii_c22_pcs_an_restart()  argument
3803 	int val = mdiodev_read(pcs, MII_BMCR);  in phylink_mii_c22_pcs_an_restart()
3808 		mdiodev_write(pcs, MII_BMCR, val);  in phylink_mii_c22_pcs_an_restart()
3813 void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,  in phylink_mii_c45_pcs_get_state()  argument
3816 	struct mii_bus *bus = pcs->bus;  in phylink_mii_c45_pcs_get_state()
3817 	int addr = pcs->addr;  in phylink_mii_c45_pcs_get_state()