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net: mv88e6xxx: use resolved link config in mac_link_up()

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Use the resolved link configuration to set the MAC configuration when
mac_link_up() for non-internal-PHY ports.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2020-02-26 10:23:51 +00:00 committed by David S. Miller
parent 5b502a7b29
commit 30c4a5b0aa
1 changed files with 60 additions and 17 deletions
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77
drivers/net/dsa/mv88e6xxx/chip.c
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@ -632,25 +632,30 @@ static void mv88e6xxx_mac_config(struct dsa_switch *ds, int port,
dev_err(ds->dev, "p%d: failed to configure MAC\n", port);
}
static void mv88e6xxx_mac_link_force(struct dsa_switch *ds, int port, int link)
{
struct mv88e6xxx_chip *chip = ds->priv;
int err;
mv88e6xxx_reg_lock(chip);
err = chip->info->ops->port_set_link(chip, port, link);
mv88e6xxx_reg_unlock(chip);
if (err)
dev_err(chip->dev, "p%d: failed to force MAC link\n", port);
}
static void mv88e6xxx_mac_link_down(struct dsa_switch *ds, int port,
unsigned int mode,
phy_interface_t interface)
{
if (mode == MLO_AN_FIXED)
mv88e6xxx_mac_link_force(ds, port, LINK_FORCED_DOWN);
struct mv88e6xxx_chip *chip = ds->priv;
const struct mv88e6xxx_ops *ops;
int err = 0;
ops = chip->info->ops;
/* Internal PHYs propagate their configuration directly to the MAC.
* External PHYs depend on whether the PPU is enabled for this port.
* FIXME: we should be using the PPU enable state here. What about
* an automedia port?
*/
if (!mv88e6xxx_phy_is_internal(ds, port) && ops->port_set_link) {
mv88e6xxx_reg_lock(chip);
err = ops->port_set_link(chip, port, LINK_FORCED_DOWN);
mv88e6xxx_reg_unlock(chip);
if (err)
dev_err(chip->dev,
"p%d: failed to force MAC link down\n", port);
}
}
static void mv88e6xxx_mac_link_up(struct dsa_switch *ds, int port,
@ -659,8 +664,46 @@ static void mv88e6xxx_mac_link_up(struct dsa_switch *ds, int port,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
if (mode == MLO_AN_FIXED)
mv88e6xxx_mac_link_force(ds, port, LINK_FORCED_UP);
struct mv88e6xxx_chip *chip = ds->priv;
const struct mv88e6xxx_ops *ops;
int err = 0;
ops = chip->info->ops;
/* Internal PHYs propagate their configuration directly to the MAC.
* External PHYs depend on whether the PPU is enabled for this port.
* FIXME: we should be using the PPU enable state here. What about
* an automedia port?
*/
if (!mv88e6xxx_phy_is_internal(ds, port)) {
mv88e6xxx_reg_lock(chip);
/* FIXME: for an automedia port, should we force the link
* down here - what if the link comes up due to "other" media
* while we're bringing the port up, how is the exclusivity
* handled in the Marvell hardware? E.g. port 4 on 88E6532
* shared between internal PHY and Serdes.
*/
if (ops->port_set_speed) {
err = ops->port_set_speed(chip, port, speed);
if (err && err != -EOPNOTSUPP)
goto error;
}
if (ops->port_set_duplex) {
err = ops->port_set_duplex(chip, port, duplex);
if (err && err != -EOPNOTSUPP)
goto error;
}
if (ops->port_set_link)
err = ops->port_set_link(chip, port, LINK_FORCED_UP);
error:
mv88e6xxx_reg_unlock(chip);
if (err && err != -EOPNOTSUPP)
dev_err(ds->dev,
"p%d: failed to configure MAC link up\n", port);
}
}
static int mv88e6xxx_stats_snapshot(struct mv88e6xxx_chip *chip, int port)