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Date: Mon, 27 Mar 2023 19:01:50 +0200
From: Andrew Lunn <andrew@...n.ch>
To: netdev <netdev@...r.kernel.org>
Cc: Florian Fainelli <f.fainelli@...il.com>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <rmk+kernel@...linux.org.uk>,
Oleksij Rempel <o.rempel@...gutronix.de>,
Andrew Lunn <andrew@...n.ch>
Subject: [RFC/RFT 12/23] net: genet: Fixup EEE
The enabling/disabling of EEE in the MAC should happen as a result of
auto negotiation. So move the enable/disable into bcmgenet_mii_setup()
which gets called by phylib when there is a change in link status.
bcmgenet_set_eee() now just writes the LTI timer value to the
hardware. Everything else is passed to phylib, so it can correctly
setup the PHY.
bcmgenet_get_eee() relies on phylib doing most of the work, the MAC
driver just adds the LTI timer value from hardware.
The call to bcmgenet_eee_enable_set() in the resume function has been
removed. There is both unconditional calls to phy_init_hw() and
genphy_config_aneg, and a call to phy_resume(). As a result, the PHY
is going to perform auto-neg, and then it completes
bcmgenet_mii_setup() will be called, which will set the hardware to
the correct EEE mode.
Signed-off-by: Andrew Lunn <andrew@...n.ch>
---
.../net/ethernet/broadcom/genet/bcmgenet.c | 42 +++++--------------
.../net/ethernet/broadcom/genet/bcmgenet.h | 3 +-
drivers/net/ethernet/broadcom/genet/bcmmii.c | 1 +
3 files changed, 12 insertions(+), 34 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index d937daa8ee88..035486304e31 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -1272,19 +1272,21 @@ static void bcmgenet_get_ethtool_stats(struct net_device *dev,
}
}
-static void bcmgenet_eee_enable_set(struct net_device *dev, bool enable)
+void bcmgenet_eee_enable_set(struct net_device *dev, bool eee_active)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
- u32 off = priv->hw_params->tbuf_offset + TBUF_ENERGY_CTRL;
+ u32 off;
u32 reg;
- if (enable && !priv->clk_eee_enabled) {
+ off = priv->hw_params->tbuf_offset + TBUF_ENERGY_CTRL;
+
+ if (eee_active && !priv->clk_eee_enabled) {
clk_prepare_enable(priv->clk_eee);
priv->clk_eee_enabled = true;
}
reg = bcmgenet_umac_readl(priv, UMAC_EEE_CTRL);
- if (enable)
+ if (eee_active)
reg |= EEE_EN;
else
reg &= ~EEE_EN;
@@ -1292,7 +1294,7 @@ static void bcmgenet_eee_enable_set(struct net_device *dev, bool enable)
/* Enable EEE and switch to a 27Mhz clock automatically */
reg = bcmgenet_readl(priv->base + off);
- if (enable)
+ if (eee_active)
reg |= TBUF_EEE_EN | TBUF_PM_EN;
else
reg &= ~(TBUF_EEE_EN | TBUF_PM_EN);
@@ -1300,25 +1302,21 @@ static void bcmgenet_eee_enable_set(struct net_device *dev, bool enable)
/* Do the same for thing for RBUF */
reg = bcmgenet_rbuf_readl(priv, RBUF_ENERGY_CTRL);
- if (enable)
+ if (eee_active)
reg |= RBUF_EEE_EN | RBUF_PM_EN;
else
reg &= ~(RBUF_EEE_EN | RBUF_PM_EN);
bcmgenet_rbuf_writel(priv, reg, RBUF_ENERGY_CTRL);
- if (!enable && priv->clk_eee_enabled) {
+ if (!eee_active && priv->clk_eee_enabled) {
clk_disable_unprepare(priv->clk_eee);
priv->clk_eee_enabled = false;
}
-
- priv->eee.eee_enabled = enable;
- priv->eee.eee_active = enable;
}
static int bcmgenet_get_eee(struct net_device *dev, struct ethtool_eee *e)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
- struct ethtool_eee *p = &priv->eee;
if (GENET_IS_V1(priv))
return -EOPNOTSUPP;
@@ -1326,8 +1324,6 @@ static int bcmgenet_get_eee(struct net_device *dev, struct ethtool_eee *e)
if (!dev->phydev)
return -ENODEV;
- e->eee_enabled = p->eee_enabled;
- e->eee_active = p->eee_active;
e->tx_lpi_timer = bcmgenet_umac_readl(priv, UMAC_EEE_LPI_TIMER);
return phy_ethtool_get_eee(dev->phydev, e);
@@ -1336,8 +1332,6 @@ static int bcmgenet_get_eee(struct net_device *dev, struct ethtool_eee *e)
static int bcmgenet_set_eee(struct net_device *dev, struct ethtool_eee *e)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
- struct ethtool_eee *p = &priv->eee;
- int ret = 0;
if (GENET_IS_V1(priv))
return -EOPNOTSUPP;
@@ -1345,20 +1339,7 @@ static int bcmgenet_set_eee(struct net_device *dev, struct ethtool_eee *e)
if (!dev->phydev)
return -ENODEV;
- p->eee_enabled = e->eee_enabled;
-
- if (!p->eee_enabled) {
- bcmgenet_eee_enable_set(dev, false);
- } else {
- ret = phy_init_eee(dev->phydev, false);
- if (ret) {
- netif_err(priv, hw, dev, "EEE initialization failed\n");
- return ret;
- }
-
- bcmgenet_umac_writel(priv, e->tx_lpi_timer, UMAC_EEE_LPI_TIMER);
- bcmgenet_eee_enable_set(dev, true);
- }
+ bcmgenet_umac_writel(priv, e->tx_lpi_timer, UMAC_EEE_LPI_TIMER);
return phy_ethtool_set_eee(dev->phydev, e);
}
@@ -4278,9 +4259,6 @@ static int bcmgenet_resume(struct device *d)
if (!device_may_wakeup(d))
phy_resume(dev->phydev);
- if (priv->eee.eee_enabled)
- bcmgenet_eee_enable_set(dev, true);
-
bcmgenet_netif_start(dev);
netif_device_attach(dev);
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
index 946f6e283c4e..8c9643ec738c 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
@@ -644,8 +644,6 @@ struct bcmgenet_priv {
bool wol_active;
struct bcmgenet_mib_counters mib;
-
- struct ethtool_eee eee;
};
#define GENET_IO_MACRO(name, offset) \
@@ -703,4 +701,5 @@ int bcmgenet_wol_power_down_cfg(struct bcmgenet_priv *priv,
void bcmgenet_wol_power_up_cfg(struct bcmgenet_priv *priv,
enum bcmgenet_power_mode mode);
+void bcmgenet_eee_enable_set(struct net_device *dev, bool eee_active);
#endif /* __BCMGENET_H__ */
diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index be042905ada2..6c39839762a7 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -100,6 +100,7 @@ void bcmgenet_mii_setup(struct net_device *dev)
if (phydev->link) {
bcmgenet_mac_config(dev);
+ bcmgenet_eee_enable_set(dev, phydev->eee_active);
} else {
reg = bcmgenet_ext_readl(priv, EXT_RGMII_OOB_CTRL);
reg &= ~RGMII_LINK;
--
2.39.2
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