[PATCH net-next 0/3] net: ethoc: Misc improvements

[PATCH net-next 0/3] net: ethoc: Misc improvements

[Florian Fainelli]

Hi all,

This patch series fixes/improves a few things:

- implement a proper PHYLIB adjust_link callback to set the duplex mode
  accordingly
- do not open code the fetching of a MAC address in OF/DT environments
- demote an error message that occurs more frequently than expected in low
  CPU/memory/bandwidth environments

Tested on a Cirrus Logic EP93xx / TS7300 board.

Florian Fainelli (3):
  net: ethoc: Account for duplex changes
  net: ethoc: Utilize of_get_mac_address()
  net: ethoc: Demote packet dropped error message to debug

 drivers/net/ethernet/ethoc.c | 44 +++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 39 insertions(+), 5 deletions(-)

-- 
2.9.3

[PATCH net-next 1/3] net: ethoc: Account for duplex changes

[Florian Fainelli]

ethoc_mdio_poll() which is our PHYLIB adjust_link callback does nothing,
we should at least react to duplex changes and change MODER accordingly.
Speed changes is not a problem, since the OpenCores Ethernet core seems
to be reacting okay without us telling it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/ethernet/ethoc.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/drivers/net/ethernet/ethoc.c b/drivers/net/ethernet/ethoc.c
index 6456c180114b..877c02a36c85 100644
--- a/drivers/net/ethernet/ethoc.c
+++ b/drivers/net/ethernet/ethoc.c
@@ -221,6 +221,9 @@ struct ethoc {
 	struct mii_bus *mdio;
 	struct clk *clk;
 	s8 phy_id;
+
+	int old_link;
+	int old_duplex;
 };
 
 /**
@@ -667,6 +670,32 @@ static int ethoc_mdio_write(struct mii_bus *bus, int phy, int reg, u16 val)
 
 static void ethoc_mdio_poll(struct net_device *dev)
 {
+	struct ethoc *priv = netdev_priv(dev);
+	struct phy_device *phydev = dev->phydev;
+	bool changed = false;
+	u32 mode;
+
+	if (priv->old_link != phydev->link) {
+		changed = true;
+		priv->old_link = phydev->link;
+	}
+
+	if (priv->old_duplex != phydev->duplex) {
+		changed = true;
+		priv->old_duplex = phydev->duplex;
+	}
+
+	if (!changed)
+		return;
+
+	mode = ethoc_read(priv, MODER);
+	if (phydev->duplex == DUPLEX_FULL)
+		mode |= MODER_FULLD;
+	else
+		mode &= ~MODER_FULLD;
+	ethoc_write(priv, MODER, mode);
+
+	phy_print_status(phydev);
 }
 
 static int ethoc_mdio_probe(struct net_device *dev)
@@ -685,6 +714,9 @@ static int ethoc_mdio_probe(struct net_device *dev)
 		return -ENXIO;
 	}
 
+	priv->old_duplex = -1;
+	priv->old_link = -1;
+
 	err = phy_connect_direct(dev, phy, ethoc_mdio_poll,
 				 PHY_INTERFACE_MODE_GMII);
 	if (err) {
@@ -721,6 +753,9 @@ static int ethoc_open(struct net_device *dev)
 		netif_start_queue(dev);
 	}
 
+	priv->old_link = -1;
+	priv->old_duplex = -1;
+
 	phy_start(dev->phydev);
 	napi_enable(&priv->napi);
 
-- 
2.9.3

Re: [PATCH net-next 1/3] net: ethoc: Account for duplex changes

[Tobias Klauser]

On 2016-12-04 at 21:40:28 +0100, Florian Fainelli <f.fainelli@gmail.com> wrote:
> ethoc_mdio_poll() which is our PHYLIB adjust_link callback does nothing,
> we should at least react to duplex changes and change MODER accordingly.
> Speed changes is not a problem, since the OpenCores Ethernet core seems
> to be reacting okay without us telling it.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Reviewed-by: Tobias Klauser <tklauser@distanz.ch>

Re: [PATCH net-next 1/3] net: ethoc: Account for duplex changes

[Thierry Reding]

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On Sun, Dec 04, 2016 at 12:40:28PM -0800, Florian Fainelli wrote:
> ethoc_mdio_poll() which is our PHYLIB adjust_link callback does nothing,
> we should at least react to duplex changes and change MODER accordingly.
> Speed changes is not a problem, since the OpenCores Ethernet core seems
> to be reacting okay without us telling it.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
> ---
>  drivers/net/ethernet/ethoc.c | 35 +++++++++++++++++++++++++++++++++++
>  1 file changed, 35 insertions(+)

Acked-by: Thierry Reding <thierry.reding@gmail.com>

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[PATCH net-next 2/3] net: ethoc: Utilize of_get_mac_address()

[Florian Fainelli]

Do not open code getting the MAC address exclusively from the
"local-mac-address" property, but instead use of_get_mac_address() which
looks up the MAC address using the 3 typical property names.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/ethernet/ethoc.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/ethoc.c b/drivers/net/ethernet/ethoc.c
index 877c02a36c85..8d0cb5ce87ee 100644
--- a/drivers/net/ethernet/ethoc.c
+++ b/drivers/net/ethernet/ethoc.c
@@ -23,6 +23,7 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/of.h>
+#include <linux/of_net.h>
 #include <linux/module.h>
 #include <net/ethoc.h>
 
@@ -1158,11 +1159,9 @@ static int ethoc_probe(struct platform_device *pdev)
 		memcpy(netdev->dev_addr, pdata->hwaddr, IFHWADDRLEN);
 		priv->phy_id = pdata->phy_id;
 	} else {
-		const uint8_t *mac;
+		const void *mac;
 
-		mac = of_get_property(pdev->dev.of_node,
-				      "local-mac-address",
-				      NULL);
+		mac = of_get_mac_address(pdev->dev.of_node);
 		if (mac)
 			memcpy(netdev->dev_addr, mac, IFHWADDRLEN);
 		priv->phy_id = -1;
-- 
2.9.3

Re: [PATCH net-next 2/3] net: ethoc: Utilize of_get_mac_address()

[Tobias Klauser]

On 2016-12-04 at 21:40:29 +0100, Florian Fainelli <f.fainelli@gmail.com> wrote:
> Do not open code getting the MAC address exclusively from the
> "local-mac-address" property, but instead use of_get_mac_address() which
> looks up the MAC address using the 3 typical property names.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Reviewed-by: Tobias Klauser <tklauser@distanz.ch>

Re: [PATCH net-next 2/3] net: ethoc: Utilize of_get_mac_address()

[Thierry Reding]

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On Sun, Dec 04, 2016 at 12:40:29PM -0800, Florian Fainelli wrote:
> Do not open code getting the MAC address exclusively from the
> "local-mac-address" property, but instead use of_get_mac_address() which
> looks up the MAC address using the 3 typical property names.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
> ---
>  drivers/net/ethernet/ethoc.c | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)

Acked-by: Thierry Reding <thierry.reding@gmail.com>

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[PATCH net-next 3/3] net: ethoc: Demote packet dropped error message to debug

[Florian Fainelli]

Spamming the console with: net eth1: packet dropped can happen
fairly frequently if the adapter is busy transmitting, demote the
message to a debug print.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/ethernet/ethoc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ethoc.c b/drivers/net/ethernet/ethoc.c
index 8d0cb5ce87ee..45abc81f6f55 100644
--- a/drivers/net/ethernet/ethoc.c
+++ b/drivers/net/ethernet/ethoc.c
@@ -576,7 +576,7 @@ static irqreturn_t ethoc_interrupt(int irq, void *dev_id)
 
 	/* We always handle the dropped packet interrupt */
 	if (pending & INT_MASK_BUSY) {
-		dev_err(&dev->dev, "packet dropped\n");
+		dev_dbg(&dev->dev, "packet dropped\n");
 		dev->stats.rx_dropped++;
 	}
 
-- 
2.9.3

Re: [PATCH net-next 3/3] net: ethoc: Demote packet dropped error message to debug

[Tobias Klauser]

On 2016-12-04 at 21:40:30 +0100, Florian Fainelli <f.fainelli@gmail.com> wrote:
> Spamming the console with: net eth1: packet dropped can happen
> fairly frequently if the adapter is busy transmitting, demote the
> message to a debug print.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Reviewed-by: Tobias Klauser <tklauser@distanz.ch>

Re: [PATCH net-next 3/3] net: ethoc: Demote packet dropped error message to debug

[Thierry Reding]

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On Sun, Dec 04, 2016 at 12:40:30PM -0800, Florian Fainelli wrote:
> Spamming the console with: net eth1: packet dropped can happen
> fairly frequently if the adapter is busy transmitting, demote the
> message to a debug print.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
> ---
>  drivers/net/ethernet/ethoc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Acked-by: Thierry Reding <thierry.reding@gmail.com>

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Re: [PATCH net-next 0/3] net: ethoc: Misc improvements

[David Miller]

From: Florian Fainelli <f.fainelli@gmail.com>
Date: Sun,  4 Dec 2016 12:40:27 -0800

> This patch series fixes/improves a few things:
> 
> - implement a proper PHYLIB adjust_link callback to set the duplex mode
>   accordingly
> - do not open code the fetching of a MAC address in OF/DT environments
> - demote an error message that occurs more frequently than expected in low
>   CPU/memory/bandwidth environments
> 
> Tested on a Cirrus Logic EP93xx / TS7300 board.

Series applied, thanks Florian.