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Commit e070ca37 authored by Jakub Kicinski's avatar Jakub Kicinski
Browse files

Merge branch 'net-phy-let-phy_speed_down-up-support-speeds-1Gbps' 



Heiner says:

====================
So far phy_speed_down/up can be used up to 1Gbps only. Remove this
restriction and add needed helpers to phy-core.c

v2:
- remove unused parameter in patch 1
- rename __phy_speed_down to phy_speed_down_core in patch 2
====================

Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
parents 043b8413 65b27995

drivers/net/phy/phy-core.c

+35 −2
Original line number Diff line number Diff line
@@ -207,14 +207,14 @@ size_t phy_speeds(unsigned int *speeds, size_t size, 
	return count;

}



static int __set_phy_supported(struct phy_device *phydev, u32 max_speed)

static int __set_linkmode_max_speed(u32 max_speed, unsigned long *addr)

{

	const struct phy_setting *p;

	int i;



	for (i = 0, p = settings; i < ARRAY_SIZE(settings); i++, p++) {

		if (p->speed > max_speed)

			linkmode_clear_bit(p->bit, phydev->supported);

			linkmode_clear_bit(p->bit, addr);

		else

			break;

	}
@@ -222,6 +222,11 @@ static int __set_phy_supported(struct phy_device *phydev, u32 max_speed) 
	return 0;

}



static int __set_phy_supported(struct phy_device *phydev, u32 max_speed)

{

	return __set_linkmode_max_speed(max_speed, phydev->supported);

}



int phy_set_max_speed(struct phy_device *phydev, u32 max_speed)

{

	int err;
@@ -310,6 +315,34 @@ void phy_resolve_aneg_linkmode(struct phy_device *phydev) 
}

EXPORT_SYMBOL_GPL(phy_resolve_aneg_linkmode);



static int phy_resolve_min_speed(struct phy_device *phydev, bool fdx_only)

{

	__ETHTOOL_DECLARE_LINK_MODE_MASK(common);

	int i = ARRAY_SIZE(settings);



	linkmode_and(common, phydev->lp_advertising, phydev->advertising);



	while (--i >= 0) {

		if (test_bit(settings[i].bit, common)) {

			if (fdx_only && settings[i].duplex != DUPLEX_FULL)

				continue;

			return settings[i].speed;

		}

	}



	return SPEED_UNKNOWN;

}



int phy_speed_down_core(struct phy_device *phydev)

{

	int min_common_speed = phy_resolve_min_speed(phydev, true);



	if (min_common_speed == SPEED_UNKNOWN)

		return -EINVAL;



	return __set_linkmode_max_speed(min_common_speed, phydev->advertising);

}



static void mmd_phy_indirect(struct mii_bus *bus, int phy_addr, int devad,

			     u16 regnum)

{

drivers/net/phy/phy.c

+16 −44
Original line number Diff line number Diff line
@@ -608,38 +608,21 @@ static int phy_poll_aneg_done(struct phy_device *phydev) 
 */

int phy_speed_down(struct phy_device *phydev, bool sync)

{

	__ETHTOOL_DECLARE_LINK_MODE_MASK(adv_old);

	__ETHTOOL_DECLARE_LINK_MODE_MASK(adv);

	__ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp);

	int ret;



	if (phydev->autoneg != AUTONEG_ENABLE)

		return 0;



	linkmode_copy(adv_old, phydev->advertising);

	linkmode_copy(adv, phydev->lp_advertising);

	linkmode_and(adv, adv, phydev->supported);

	linkmode_copy(adv_tmp, phydev->advertising);



	if (linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, adv) ||

	    linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, adv)) {

		linkmode_clear_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,

				   phydev->advertising);

		linkmode_clear_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,

				   phydev->advertising);

		linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,

				   phydev->advertising);

		linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,

				   phydev->advertising);

	} else if (linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,

				     adv) ||

		   linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,

				     adv)) {

		linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,

				   phydev->advertising);

		linkmode_clear_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,

				   phydev->advertising);

	}

	ret = phy_speed_down_core(phydev);

	if (ret)

		return ret;



	if (linkmode_equal(phydev->advertising, adv_old))

	linkmode_copy(phydev->adv_old, adv_tmp);



	if (linkmode_equal(phydev->advertising, adv_tmp))

		return 0;



	ret = phy_config_aneg(phydev);
@@ -658,30 +641,19 @@ EXPORT_SYMBOL_GPL(phy_speed_down); 
 */

int phy_speed_up(struct phy_device *phydev)

{

	__ETHTOOL_DECLARE_LINK_MODE_MASK(all_speeds) = { 0, };

	__ETHTOOL_DECLARE_LINK_MODE_MASK(not_speeds);

	__ETHTOOL_DECLARE_LINK_MODE_MASK(supported);

	__ETHTOOL_DECLARE_LINK_MODE_MASK(adv_old);

	__ETHTOOL_DECLARE_LINK_MODE_MASK(speeds);



	linkmode_copy(adv_old, phydev->advertising);

	__ETHTOOL_DECLARE_LINK_MODE_MASK(adv_tmp);



	if (phydev->autoneg != AUTONEG_ENABLE)

		return 0;



	linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT, all_speeds);

	linkmode_set_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT, all_speeds);

	linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT, all_speeds);

	linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT, all_speeds);

	linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT, all_speeds);

	linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT, all_speeds);

	if (linkmode_empty(phydev->adv_old))

		return 0;



	linkmode_andnot(not_speeds, adv_old, all_speeds);

	linkmode_copy(supported, phydev->supported);

	linkmode_and(speeds, supported, all_speeds);

	linkmode_or(phydev->advertising, not_speeds, speeds);

	linkmode_copy(adv_tmp, phydev->advertising);

	linkmode_copy(phydev->advertising, phydev->adv_old);

	linkmode_zero(phydev->adv_old);



	if (linkmode_equal(phydev->advertising, adv_old))

	if (linkmode_equal(phydev->advertising, adv_tmp))

		return 0;



	return phy_config_aneg(phydev);

include/linux/phy.h

+3 −0
Original line number Diff line number Diff line
@@ -403,6 +403,8 @@ struct phy_device { 
	__ETHTOOL_DECLARE_LINK_MODE_MASK(supported);

	__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising);

	__ETHTOOL_DECLARE_LINK_MODE_MASK(lp_advertising);

	/* used with phy_speed_down */

	__ETHTOOL_DECLARE_LINK_MODE_MASK(adv_old);



	/* Energy efficient ethernet modes which should be prohibited */

	u32 eee_broken_modes;
@@ -665,6 +667,7 @@ size_t phy_speeds(unsigned int *speeds, size_t size, 
		  unsigned long *mask);

void of_set_phy_supported(struct phy_device *phydev);

void of_set_phy_eee_broken(struct phy_device *phydev);

int phy_speed_down_core(struct phy_device *phydev);



/**

 * phy_is_started - Convenience function to check whether PHY is started