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Message-Id: <1435521001-25195-3-git-send-email-andrew@lunn.ch>
Date: Sun, 28 Jun 2015 21:49:59 +0200
From: Andrew Lunn <andrew@...n.ch>
To: netdev <netdev@...r.kernel.org>
Cc: Florian Fainelli <f.fainelli@...il.com>,
Guenter Roeck <linux@...ck-us.net>,
Andrew Lunn <andrew@...n.ch>
Subject: [RFC PATCHv2 2/4] dsa: mv88e6xxx: Allow speed/duplex of port to be configured
The current code sets user ports to perform auto negotiation using the
phy. CPU and DSA ports are configured to full duplex and maximum speed
the switch supports.
There are however use cases where the CPU has a slower port, and when
user ports have SFP modules with fixed speed. In these cases, allow
port settings to be read from a fixed_phy devices.
Signed-off-by: Andrew Lunn <andrew@...n.ch>
---
drivers/net/dsa/mv88e6123_61_65.c | 1 +
drivers/net/dsa/mv88e6131.c | 1 +
drivers/net/dsa/mv88e6171.c | 1 +
drivers/net/dsa/mv88e6352.c | 1 +
drivers/net/dsa/mv88e6xxx.c | 56 +++++++++++++++++++++++++++++++++++++++
drivers/net/dsa/mv88e6xxx.h | 2 ++
6 files changed, 62 insertions(+)
diff --git a/drivers/net/dsa/mv88e6123_61_65.c b/drivers/net/dsa/mv88e6123_61_65.c
index 71a29a7ce538..3de2a6d73fdc 100644
--- a/drivers/net/dsa/mv88e6123_61_65.c
+++ b/drivers/net/dsa/mv88e6123_61_65.c
@@ -129,6 +129,7 @@ struct dsa_switch_driver mv88e6123_61_65_switch_driver = {
.get_strings = mv88e6xxx_get_strings,
.get_ethtool_stats = mv88e6xxx_get_ethtool_stats,
.get_sset_count = mv88e6xxx_get_sset_count,
+ .adjust_link = mv88e6xxx_adjust_link,
#ifdef CONFIG_NET_DSA_HWMON
.get_temp = mv88e6xxx_get_temp,
#endif
diff --git a/drivers/net/dsa/mv88e6131.c b/drivers/net/dsa/mv88e6131.c
index 32f4a08e9bc9..3e8386529965 100644
--- a/drivers/net/dsa/mv88e6131.c
+++ b/drivers/net/dsa/mv88e6131.c
@@ -182,6 +182,7 @@ struct dsa_switch_driver mv88e6131_switch_driver = {
.get_strings = mv88e6xxx_get_strings,
.get_ethtool_stats = mv88e6xxx_get_ethtool_stats,
.get_sset_count = mv88e6xxx_get_sset_count,
+ .adjust_link = mv88e6xxx_adjust_link,
};
MODULE_ALIAS("platform:mv88e6085");
diff --git a/drivers/net/dsa/mv88e6171.c b/drivers/net/dsa/mv88e6171.c
index 1c7808495a9d..8803e20ebc52 100644
--- a/drivers/net/dsa/mv88e6171.c
+++ b/drivers/net/dsa/mv88e6171.c
@@ -108,6 +108,7 @@ struct dsa_switch_driver mv88e6171_switch_driver = {
.get_strings = mv88e6xxx_get_strings,
.get_ethtool_stats = mv88e6xxx_get_ethtool_stats,
.get_sset_count = mv88e6xxx_get_sset_count,
+ .adjust_link = mv88e6xxx_adjust_link,
#ifdef CONFIG_NET_DSA_HWMON
.get_temp = mv88e6xxx_get_temp,
#endif
diff --git a/drivers/net/dsa/mv88e6352.c b/drivers/net/dsa/mv88e6352.c
index 632815c10a40..7a2deddbe270 100644
--- a/drivers/net/dsa/mv88e6352.c
+++ b/drivers/net/dsa/mv88e6352.c
@@ -374,6 +374,7 @@ struct dsa_switch_driver mv88e6352_switch_driver = {
.get_strings = mv88e6xxx_get_strings,
.get_ethtool_stats = mv88e6xxx_get_ethtool_stats,
.get_sset_count = mv88e6xxx_get_sset_count,
+ .adjust_link = mv88e6xxx_adjust_link,
.set_eee = mv88e6xxx_set_eee,
.get_eee = mv88e6xxx_get_eee,
#ifdef CONFIG_NET_DSA_HWMON
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index fd8547c2b79d..fc73d809c292 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -11,6 +11,7 @@
#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
#include <linux/if_bridge.h>
#include <linux/jiffies.h>
#include <linux/list.h>
@@ -545,6 +546,61 @@ static bool mv88e6xxx_6352_family(struct dsa_switch *ds)
return false;
}
+/* We expect the switch to perform auto negotiation if there is a real
+ * phy. However, in the case of a fixed link phy, we force the port
+ * settings from the fixed link settings.
+ */
+void mv88e6xxx_adjust_link(struct dsa_switch *ds, int port,
+ struct phy_device *phydev)
+{
+ struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+ u32 ret, reg;
+
+ if (!phy_is_pseudo_fixed_link(phydev))
+ return;
+
+ mutex_lock(&ps->smi_mutex);
+
+ ret = _mv88e6xxx_reg_read(ds, REG_PORT(port), PORT_PCS_CTRL);
+ if (ret < 0)
+ goto out;
+
+ reg = ret & ~(PORT_PCS_CTRL_LINK_UP |
+ PORT_PCS_CTRL_FORCE_LINK |
+ PORT_PCS_CTRL_DUPLEX_FULL |
+ PORT_PCS_CTRL_FORCE_DUPLEX |
+ PORT_PCS_CTRL_UNFORCED);
+
+ reg |= PORT_PCS_CTRL_FORCE_LINK;
+ if (phydev->link)
+ reg |= PORT_PCS_CTRL_LINK_UP;
+
+ if (mv88e6xxx_6065_family(ds) && phydev->speed > SPEED_100)
+ goto out;
+
+ switch (phydev->speed) {
+ case SPEED_1000:
+ reg |= PORT_PCS_CTRL_1000;
+ break;
+ case SPEED_100:
+ reg |= PORT_PCS_CTRL_100;
+ break;
+ case SPEED_10:
+ reg |= PORT_PCS_CTRL_10;
+ default:
+ goto out;
+ }
+
+ reg |= PORT_PCS_CTRL_FORCE_DUPLEX;
+ if (phydev->duplex == DUPLEX_FULL)
+ reg |= PORT_PCS_CTRL_DUPLEX_FULL;
+
+ _mv88e6xxx_reg_write(ds, REG_PORT(port), PORT_PCS_CTRL, reg);
+
+out:
+ mutex_unlock(&ps->smi_mutex);
+}
+
/* Must be called with SMI mutex held */
static int _mv88e6xxx_stats_wait(struct dsa_switch *ds)
{
diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h
index a650b2656de9..fcc29b5ab7ea 100644
--- a/drivers/net/dsa/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx.h
@@ -386,6 +386,8 @@ void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds, int port,
uint64_t *data);
int mv88e6xxx_get_sset_count(struct dsa_switch *ds);
int mv88e6xxx_get_sset_count_basic(struct dsa_switch *ds);
+void mv88e6xxx_adjust_link(struct dsa_switch *ds, int port,
+ struct phy_device *phydev);
int mv88e6xxx_get_regs_len(struct dsa_switch *ds, int port);
void mv88e6xxx_get_regs(struct dsa_switch *ds, int port,
struct ethtool_regs *regs, void *_p);
--
2.1.4
--
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