cxgb3: commnonize LASI phy code
Add generic code to manage interrupt driven PHYs.
Do not reset the phy after link parameters update,
the new values might get lost.
Return early from link change notification
when the link parameters remain unchanged.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/cxgb3/ael1002.c b/drivers/net/cxgb3/ael1002.c
index f4e046e..f6e575f 100644
--- a/drivers/net/cxgb3/ael1002.c
+++ b/drivers/net/cxgb3/ael1002.c
@@ -39,9 +39,6 @@
AEL1002_PWR_DOWN_LO = 0xc012,
AEL1002_XFI_EQL = 0xc015,
AEL1002_LB_EN = 0xc017,
-
- LASI_CTRL = 0x9002,
- LASI_STAT = 0x9005
};
static void ael100x_txon(struct cphy *phy)
@@ -134,33 +131,6 @@
return t3_phy_reset(phy, MDIO_DEV_PMA_PMD, wait);
}
-static int ael1006_intr_enable(struct cphy *phy)
-{
- return mdio_write(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, 1);
-}
-
-static int ael1006_intr_disable(struct cphy *phy)
-{
- return mdio_write(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, 0);
-}
-
-static int ael1006_intr_clear(struct cphy *phy)
-{
- u32 val;
-
- return mdio_read(phy, MDIO_DEV_PMA_PMD, LASI_STAT, &val);
-}
-
-static int ael1006_intr_handler(struct cphy *phy)
-{
- unsigned int status;
- int err = mdio_read(phy, MDIO_DEV_PMA_PMD, LASI_STAT, &status);
-
- if (err)
- return err;
- return (status & 1) ? cphy_cause_link_change : 0;
-}
-
static int ael1006_power_down(struct cphy *phy, int enable)
{
return t3_mdio_change_bits(phy, MDIO_DEV_PMA_PMD, MII_BMCR,
@@ -169,10 +139,10 @@
static struct cphy_ops ael1006_ops = {
.reset = ael1006_reset,
- .intr_enable = ael1006_intr_enable,
- .intr_disable = ael1006_intr_disable,
- .intr_clear = ael1006_intr_clear,
- .intr_handler = ael1006_intr_handler,
+ .intr_enable = t3_phy_lasi_intr_enable,
+ .intr_disable = t3_phy_lasi_intr_disable,
+ .intr_clear = t3_phy_lasi_intr_clear,
+ .intr_handler = t3_phy_lasi_intr_handler,
.get_link_status = ael100x_get_link_status,
.power_down = ael1006_power_down,
};
@@ -189,10 +159,10 @@
static struct cphy_ops qt2045_ops = {
.reset = ael1006_reset,
- .intr_enable = ael1006_intr_enable,
- .intr_disable = ael1006_intr_disable,
- .intr_clear = ael1006_intr_clear,
- .intr_handler = ael1006_intr_handler,
+ .intr_enable = t3_phy_lasi_intr_enable,
+ .intr_disable = t3_phy_lasi_intr_disable,
+ .intr_clear = t3_phy_lasi_intr_clear,
+ .intr_handler = t3_phy_lasi_intr_handler,
.get_link_status = ael100x_get_link_status,
.power_down = ael1006_power_down,
};
diff --git a/drivers/net/cxgb3/common.h b/drivers/net/cxgb3/common.h
index 75b5ee6..d1b6b1e 100644
--- a/drivers/net/cxgb3/common.h
+++ b/drivers/net/cxgb3/common.h
@@ -522,7 +522,20 @@
MDIO_DEV_PMA_PMD = 1,
MDIO_DEV_WIS = 2,
MDIO_DEV_PCS = 3,
- MDIO_DEV_XGXS = 4
+ MDIO_DEV_XGXS = 4,
+ MDIO_DEV_ANEG = 7,
+ MDIO_DEV_VEND1 = 30,
+ MDIO_DEV_VEND2 = 31
+};
+
+/* LASI control and status registers */
+enum {
+ RX_ALARM_CTRL = 0x9000,
+ TX_ALARM_CTRL = 0x9001,
+ LASI_CTRL = 0x9002,
+ RX_ALARM_STAT = 0x9003,
+ TX_ALARM_STAT = 0x9004,
+ LASI_STAT = 0x9005
};
/* PHY loopback direction */
@@ -665,6 +678,10 @@
int t3_phy_reset(struct cphy *phy, int mmd, int wait);
int t3_phy_advertise(struct cphy *phy, unsigned int advert);
int t3_set_phy_speed_duplex(struct cphy *phy, int speed, int duplex);
+int t3_phy_lasi_intr_enable(struct cphy *phy);
+int t3_phy_lasi_intr_disable(struct cphy *phy);
+int t3_phy_lasi_intr_clear(struct cphy *phy);
+int t3_phy_lasi_intr_handler(struct cphy *phy);
void t3_intr_enable(struct adapter *adapter);
void t3_intr_disable(struct adapter *adapter);
diff --git a/drivers/net/cxgb3/cxgb3_main.c b/drivers/net/cxgb3/cxgb3_main.c
index 5b8251d..bddcf94 100644
--- a/drivers/net/cxgb3/cxgb3_main.c
+++ b/drivers/net/cxgb3/cxgb3_main.c
@@ -1516,11 +1516,22 @@
static int set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
+ int cap;
struct port_info *p = netdev_priv(dev);
struct link_config *lc = &p->link_config;
- if (!(lc->supported & SUPPORTED_Autoneg))
- return -EOPNOTSUPP; /* can't change speed/duplex */
+ if (!(lc->supported & SUPPORTED_Autoneg)) {
+ /*
+ * PHY offers a single speed/duplex. See if that's what's
+ * being requested.
+ */
+ if (cmd->autoneg == AUTONEG_DISABLE) {
+ cap = speed_duplex_to_caps(cmd->speed, cmd->duplex);
+ if (lc->supported & cap)
+ return 0;
+ }
+ return -EINVAL;
+ }
if (cmd->autoneg == AUTONEG_DISABLE) {
int cap = speed_duplex_to_caps(cmd->speed, cmd->duplex);
@@ -2195,7 +2206,7 @@
mmd = data->phy_id >> 8;
if (!mmd)
mmd = MDIO_DEV_PCS;
- else if (mmd > MDIO_DEV_XGXS)
+ else if (mmd > MDIO_DEV_VEND2)
return -EINVAL;
ret =
@@ -2221,7 +2232,7 @@
mmd = data->phy_id >> 8;
if (!mmd)
mmd = MDIO_DEV_PCS;
- else if (mmd > MDIO_DEV_XGXS)
+ else if (mmd > MDIO_DEV_VEND2)
return -EINVAL;
ret =
diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c
index bfce761..58a3097 100644
--- a/drivers/net/cxgb3/t3_hw.c
+++ b/drivers/net/cxgb3/t3_hw.c
@@ -442,6 +442,33 @@
return mdio_write(phy, 0, MII_BMCR, ctl);
}
+int t3_phy_lasi_intr_enable(struct cphy *phy)
+{
+ return mdio_write(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, 1);
+}
+
+int t3_phy_lasi_intr_disable(struct cphy *phy)
+{
+ return mdio_write(phy, MDIO_DEV_PMA_PMD, LASI_CTRL, 0);
+}
+
+int t3_phy_lasi_intr_clear(struct cphy *phy)
+{
+ u32 val;
+
+ return mdio_read(phy, MDIO_DEV_PMA_PMD, LASI_STAT, &val);
+}
+
+int t3_phy_lasi_intr_handler(struct cphy *phy)
+{
+ unsigned int status;
+ int err = mdio_read(phy, MDIO_DEV_PMA_PMD, LASI_STAT, &status);
+
+ if (err)
+ return err;
+ return (status & 1) ? cphy_cause_link_change : 0;
+}
+
static const struct adapter_info t3_adap_info[] = {
{2, 0,
F_GPIO2_OEN | F_GPIO4_OEN |
@@ -1132,6 +1159,15 @@
phy->ops->get_link_status(phy, &link_ok, &speed, &duplex, &fc);
+ if (lc->requested_fc & PAUSE_AUTONEG)
+ fc &= lc->requested_fc;
+ else
+ fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
+
+ if (link_ok == lc->link_ok && speed == lc->speed &&
+ duplex == lc->duplex && fc == lc->fc)
+ return; /* nothing changed */
+
if (link_ok != lc->link_ok && adapter->params.rev > 0 &&
uses_xaui(adapter)) {
if (link_ok)
@@ -1142,10 +1178,6 @@
lc->link_ok = link_ok;
lc->speed = speed < 0 ? SPEED_INVALID : speed;
lc->duplex = duplex < 0 ? DUPLEX_INVALID : duplex;
- if (lc->requested_fc & PAUSE_AUTONEG)
- fc &= lc->requested_fc;
- else
- fc = lc->requested_fc & (PAUSE_RX | PAUSE_TX);
if (link_ok && speed >= 0 && lc->autoneg == AUTONEG_ENABLE) {
/* Set MAC speed, duplex, and flow control to match PHY. */
@@ -1191,7 +1223,6 @@
fc);
/* Also disables autoneg */
phy->ops->set_speed_duplex(phy, lc->speed, lc->duplex);
- phy->ops->reset(phy, 0);
} else
phy->ops->autoneg_enable(phy);
} else {