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Date: Mon, 12 Apr 2021 15:17:00 +0300
From: Ivan Bornyakov <i.bornyakov@...rotek.ru>
To: unlisted-recipients:; (no To-header on input)
Cc: Ivan Bornyakov <i.bornyakov@...rotek.ru>, system@...rotek.ru,
andrew@...n.ch, hkallweit1@...il.com, linux@...linux.org.uk,
davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH net-next 2/2] net: phy: marvell-88x2222: swap 1G/10G modes on autoneg
Setting 10G without autonegotiation is invalid according to
phy_ethtool_ksettings_set(). Thus, if autonegotiation can't complete for
quite a time, but there is signal in line, switch line interface type to
10GBase-R, if supported, in hope for link to be established. And vice
versa.
Signed-off-by: Ivan Bornyakov <i.bornyakov@...rotek.ru>
---
drivers/net/phy/marvell-88x2222.c | 276 ++++++++++++++++++------------
1 file changed, 168 insertions(+), 108 deletions(-)
diff --git a/drivers/net/phy/marvell-88x2222.c b/drivers/net/phy/marvell-88x2222.c
index fb285ac741b2..d16c81f08334 100644
--- a/drivers/net/phy/marvell-88x2222.c
+++ b/drivers/net/phy/marvell-88x2222.c
@@ -48,6 +48,8 @@
#define MV_1GBX_PHY_STAT_SPEED100 BIT(14)
#define MV_1GBX_PHY_STAT_SPEED1000 BIT(15)
+#define AUTONEG_TIMEOUT 3
+
struct mv2222_data {
phy_interface_t line_interface;
__ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
@@ -82,89 +84,6 @@ static int mv2222_soft_reset(struct phy_device *phydev)
5000, 1000000, true);
}
-/* Returns negative on error, 0 if link is down, 1 if link is up */
-static int mv2222_read_status_10g(struct phy_device *phydev)
-{
- int val, link = 0;
-
- val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_STAT1);
- if (val < 0)
- return val;
-
- if (val & MDIO_STAT1_LSTATUS) {
- link = 1;
-
- /* 10GBASE-R do not support auto-negotiation */
- phydev->autoneg = AUTONEG_DISABLE;
- phydev->speed = SPEED_10000;
- phydev->duplex = DUPLEX_FULL;
- }
-
- return link;
-}
-
-/* Returns negative on error, 0 if link is down, 1 if link is up */
-static int mv2222_read_status_1g(struct phy_device *phydev)
-{
- int val, link = 0;
-
- val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_1GBX_STAT);
- if (val < 0)
- return val;
-
- if (!(val & BMSR_LSTATUS) ||
- (phydev->autoneg == AUTONEG_ENABLE &&
- !(val & BMSR_ANEGCOMPLETE)))
- return 0;
-
- link = 1;
-
- val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_1GBX_PHY_STAT);
- if (val < 0)
- return val;
-
- if (val & MV_1GBX_PHY_STAT_AN_RESOLVED) {
- if (val & MV_1GBX_PHY_STAT_DUPLEX)
- phydev->duplex = DUPLEX_FULL;
- else
- phydev->duplex = DUPLEX_HALF;
-
- if (val & MV_1GBX_PHY_STAT_SPEED1000)
- phydev->speed = SPEED_1000;
- else if (val & MV_1GBX_PHY_STAT_SPEED100)
- phydev->speed = SPEED_100;
- else
- phydev->speed = SPEED_10;
- }
-
- return link;
-}
-
-static int mv2222_read_status(struct phy_device *phydev)
-{
- struct mv2222_data *priv = phydev->priv;
- int link;
-
- phydev->link = 0;
- phydev->speed = SPEED_UNKNOWN;
- phydev->duplex = DUPLEX_UNKNOWN;
-
- if (!priv->sfp_link)
- return 0;
-
- if (priv->line_interface == PHY_INTERFACE_MODE_10GBASER)
- link = mv2222_read_status_10g(phydev);
- else
- link = mv2222_read_status_1g(phydev);
-
- if (link < 0)
- return link;
-
- phydev->link = link;
-
- return 0;
-}
-
static int mv2222_disable_aneg(struct phy_device *phydev)
{
int ret = phy_clear_bits_mmd(phydev, MDIO_MMD_PCS, MV_1GBX_CTRL,
@@ -252,6 +171,24 @@ static bool mv2222_is_1gbx_capable(struct phy_device *phydev)
priv->supported);
}
+static bool mv2222_is_sgmii_capable(struct phy_device *phydev)
+{
+ struct mv2222_data *priv = phydev->priv;
+
+ return (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
+ priv->supported) ||
+ linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
+ priv->supported) ||
+ linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
+ priv->supported) ||
+ linkmode_test_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
+ priv->supported) ||
+ linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT,
+ priv->supported) ||
+ linkmode_test_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT,
+ priv->supported));
+}
+
static int mv2222_config_line(struct phy_device *phydev)
{
struct mv2222_data *priv = phydev->priv;
@@ -271,7 +208,7 @@ static int mv2222_config_line(struct phy_device *phydev)
}
}
-static int mv2222_setup_forced(struct phy_device *phydev)
+static int mv2222_swap_line_type(struct phy_device *phydev)
{
struct mv2222_data *priv = phydev->priv;
bool changed = false;
@@ -279,25 +216,23 @@ static int mv2222_setup_forced(struct phy_device *phydev)
switch (priv->line_interface) {
case PHY_INTERFACE_MODE_10GBASER:
- if (phydev->speed == SPEED_1000 &&
- mv2222_is_1gbx_capable(phydev)) {
+ if (mv2222_is_1gbx_capable(phydev)) {
priv->line_interface = PHY_INTERFACE_MODE_1000BASEX;
changed = true;
}
- break;
- case PHY_INTERFACE_MODE_1000BASEX:
- if (phydev->speed == SPEED_10000 &&
- mv2222_is_10g_capable(phydev)) {
- priv->line_interface = PHY_INTERFACE_MODE_10GBASER;
+ if (mv2222_is_sgmii_capable(phydev)) {
+ priv->line_interface = PHY_INTERFACE_MODE_SGMII;
changed = true;
}
break;
+ case PHY_INTERFACE_MODE_1000BASEX:
case PHY_INTERFACE_MODE_SGMII:
- ret = mv2222_set_sgmii_speed(phydev);
- if (ret < 0)
- return ret;
+ if (mv2222_is_10g_capable(phydev)) {
+ priv->line_interface = PHY_INTERFACE_MODE_10GBASER;
+ changed = true;
+ }
break;
default:
@@ -310,6 +245,29 @@ static int mv2222_setup_forced(struct phy_device *phydev)
return ret;
}
+ return 0;
+}
+
+static int mv2222_setup_forced(struct phy_device *phydev)
+{
+ struct mv2222_data *priv = phydev->priv;
+ int ret;
+
+ if (priv->line_interface == PHY_INTERFACE_MODE_10GBASER) {
+ if (phydev->speed < SPEED_10000 &&
+ phydev->speed != SPEED_UNKNOWN) {
+ ret = mv2222_swap_line_type(phydev);
+ if (ret < 0)
+ return ret;
+ }
+ }
+
+ if (priv->line_interface == PHY_INTERFACE_MODE_SGMII) {
+ ret = mv2222_set_sgmii_speed(phydev);
+ if (ret < 0)
+ return ret;
+ }
+
return mv2222_disable_aneg(phydev);
}
@@ -323,17 +281,9 @@ static int mv2222_config_aneg(struct phy_device *phydev)
return 0;
if (phydev->autoneg == AUTONEG_DISABLE ||
- phydev->speed == SPEED_10000)
+ priv->line_interface == PHY_INTERFACE_MODE_10GBASER)
return mv2222_setup_forced(phydev);
- if (priv->line_interface == PHY_INTERFACE_MODE_10GBASER &&
- mv2222_is_1gbx_capable(phydev)) {
- priv->line_interface = PHY_INTERFACE_MODE_1000BASEX;
- ret = mv2222_config_line(phydev);
- if (ret < 0)
- return ret;
- }
-
adv = linkmode_adv_to_mii_adv_x(priv->supported,
ETHTOOL_LINK_MODE_1000baseX_Full_BIT);
@@ -367,6 +317,120 @@ static int mv2222_aneg_done(struct phy_device *phydev)
return (ret & BMSR_ANEGCOMPLETE);
}
+/* Returns negative on error, 0 if link is down, 1 if link is up */
+static int mv2222_read_status_10g(struct phy_device *phydev)
+{
+ static int timeout;
+ int val, link = 0;
+
+ val = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_STAT1);
+ if (val < 0)
+ return val;
+
+ if (val & MDIO_STAT1_LSTATUS) {
+ link = 1;
+
+ /* 10GBASE-R do not support auto-negotiation */
+ phydev->autoneg = AUTONEG_DISABLE;
+ phydev->speed = SPEED_10000;
+ phydev->duplex = DUPLEX_FULL;
+ } else {
+ if (phydev->autoneg == AUTONEG_ENABLE) {
+ timeout++;
+
+ if (timeout > AUTONEG_TIMEOUT) {
+ timeout = 0;
+
+ val = mv2222_swap_line_type(phydev);
+ if (val < 0)
+ return val;
+
+ return mv2222_config_aneg(phydev);
+ }
+ }
+ }
+
+ return link;
+}
+
+/* Returns negative on error, 0 if link is down, 1 if link is up */
+static int mv2222_read_status_1g(struct phy_device *phydev)
+{
+ static int timeout;
+ int val, link = 0;
+
+ val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_1GBX_STAT);
+ if (val < 0)
+ return val;
+
+ if ((phydev->autoneg == AUTONEG_ENABLE &&
+ !(val & BMSR_ANEGCOMPLETE))) {
+ timeout++;
+
+ if (timeout > AUTONEG_TIMEOUT) {
+ timeout = 0;
+
+ val = mv2222_swap_line_type(phydev);
+ if (val < 0)
+ return val;
+
+ return mv2222_config_aneg(phydev);
+ }
+
+ return 0;
+ }
+
+ if (!(val & BMSR_LSTATUS))
+ return 0;
+
+ link = 1;
+
+ val = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_1GBX_PHY_STAT);
+ if (val < 0)
+ return val;
+
+ if (val & MV_1GBX_PHY_STAT_AN_RESOLVED) {
+ if (val & MV_1GBX_PHY_STAT_DUPLEX)
+ phydev->duplex = DUPLEX_FULL;
+ else
+ phydev->duplex = DUPLEX_HALF;
+
+ if (val & MV_1GBX_PHY_STAT_SPEED1000)
+ phydev->speed = SPEED_1000;
+ else if (val & MV_1GBX_PHY_STAT_SPEED100)
+ phydev->speed = SPEED_100;
+ else
+ phydev->speed = SPEED_10;
+ }
+
+ return link;
+}
+
+static int mv2222_read_status(struct phy_device *phydev)
+{
+ struct mv2222_data *priv = phydev->priv;
+ int link;
+
+ phydev->link = 0;
+ phydev->speed = SPEED_UNKNOWN;
+ phydev->duplex = DUPLEX_UNKNOWN;
+
+ if (!priv->sfp_link)
+ return 0;
+
+ if (priv->line_interface == PHY_INTERFACE_MODE_10GBASER)
+ link = mv2222_read_status_10g(phydev);
+ else
+ link = mv2222_read_status_1g(phydev);
+
+ if (link < 0)
+ return link;
+
+ phydev->link = link;
+
+ return 0;
+}
+
static int mv2222_resume(struct phy_device *phydev)
{
return mv2222_tx_enable(phydev);
@@ -428,11 +492,7 @@ static int mv2222_sfp_insert(void *upstream, const struct sfp_eeprom_id *id)
return ret;
if (mutex_trylock(&phydev->lock)) {
- if (priv->line_interface == PHY_INTERFACE_MODE_10GBASER)
- ret = mv2222_setup_forced(phydev);
- else
- ret = mv2222_config_aneg(phydev);
-
+ ret = mv2222_config_aneg(phydev);
mutex_unlock(&phydev->lock);
}
--
2.26.3
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