From a1fba9dfbe628b171ac789510aca233178fe7d85 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 24 Jan 2015 19:41:55 +0000 Subject: [PATCH] ar8216: add link change detection for switch ports Check for switch port link changes and - flush ATU in case of a change - report link change via syslog Signed-off-by: Heiner Kallweit SVN-Revision: 44102 --- .../generic/files/drivers/net/phy/ar8216.c | 35 +++++++++++++++++++ .../generic/files/drivers/net/phy/ar8216.h | 1 + 2 files changed, 36 insertions(+) diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c index 370f1acc89e5..130ebf7126df 100644 --- a/target/linux/generic/files/drivers/net/phy/ar8216.c +++ b/target/linux/generic/files/drivers/net/phy/ar8216.c @@ -1707,12 +1707,47 @@ ar8xxx_phy_config_init(struct phy_device *phydev) return 0; } +static bool +ar8xxx_check_link_states(struct ar8xxx_priv *priv) +{ + bool link_new, changed = false; + u32 status; + int i; + + mutex_lock(&priv->reg_mutex); + + for (i = 0; i < priv->dev.ports; i++) { + status = priv->chip->read_port_status(priv, i); + link_new = !!(status & AR8216_PORT_STATUS_LINK_UP); + if (link_new == priv->link_up[i]) + continue; + + priv->link_up[i] = link_new; + changed = true; + dev_info(&priv->phy->dev, "Port %d is %s\n", + i, link_new ? "up" : "down"); + } + + if (changed) + priv->chip->atu_flush(priv); + + mutex_unlock(&priv->reg_mutex); + + return changed; +} + static int ar8xxx_phy_read_status(struct phy_device *phydev) { struct ar8xxx_priv *priv = phydev->priv; struct switch_port_link link; + /* check for link changes and flush ATU + * if a change was detected + */ + if (phydev->state == PHY_CHANGELINK) + ar8xxx_check_link_states(priv); + if (phydev->addr != 0) return genphy_read_status(phydev); diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.h b/target/linux/generic/files/drivers/net/phy/ar8216.h index 8487c3ea4956..2d025ae835d2 100644 --- a/target/linux/generic/files/drivers/net/phy/ar8216.h +++ b/target/linux/generic/files/drivers/net/phy/ar8216.h @@ -396,6 +396,7 @@ struct ar8xxx_priv { bool initialized; bool port4_phy; char buf[2048]; + bool link_up[AR8X16_MAX_PORTS]; bool init; -- 2.30.2