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authorDivy Le Ray <divy@chelsio.com>2008-10-09 02:39:31 +0200
committerDavid S. Miller <davem@davemloft.net>2008-10-09 02:39:31 +0200
commit9b1e36566c5fafbcc732c971acfcf8580332931a (patch)
tree2c779d712f07f0b097ad1a2041779597b7ca9bbc /drivers/net/cxgb3/t3_hw.c
parentcxgb3: More flexible support for PHY interrupts. (diff)
downloadlinux-9b1e36566c5fafbcc732c971acfcf8580332931a.tar.xz
linux-9b1e36566c5fafbcc732c971acfcf8580332931a.zip
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>
Diffstat (limited to 'drivers/net/cxgb3/t3_hw.c')
-rw-r--r--drivers/net/cxgb3/t3_hw.c41
1 files changed, 36 insertions, 5 deletions
diff --git a/drivers/net/cxgb3/t3_hw.c b/drivers/net/cxgb3/t3_hw.c
index bfce761156a1..58a3097579f9 100644
--- a/drivers/net/cxgb3/t3_hw.c
+++ b/drivers/net/cxgb3/t3_hw.c
@@ -442,6 +442,33 @@ int t3_set_phy_speed_duplex(struct cphy *phy, int speed, int duplex)
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 @@ void t3_link_changed(struct adapter *adapter, int port_id)
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 @@ void t3_link_changed(struct adapter *adapter, int port_id)
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 @@ int t3_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc)
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 {