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

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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: Jakub Kicinski <jakub.kicinski@netronome.com>
This commit is contained in:
Jakub Kicinski 2019-08-13 17:16:11 -07:00
commit e070ca371f
3 changed files with 53 additions and 45 deletions
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37
drivers/net/phy/phy-core.c
View File

@ -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)
{

58
drivers/net/phy/phy.c
View File

@ -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);

3
include/linux/phy.h
View File

@ -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