MFC r276959:

cxgb: replace r273280 with a more comprehensive fix.

Poll for link state when the link is down, even for interrupt capable
PHYs.

Allow PHYs to report a dubious "partial" link.  If this state is seen 3
consecutive times (each check is ~1s apart) then reset the PHY.  This is
a workaround for a situation where repeatedly toggling the link from the
peer gets the AEL2005 PHY into a state where it never establishes a PCS
block lock even when everything is in order.

1 files changed, 3 insertions, 3 deletions

diff --git a/sys/dev/cxgb/common/cxgb_aq100x.c b/sys/dev/cxgb/common/cxgb_aq100x.c
index d36d07a..b253e67 100644
--- a/sys/dev/cxgb/common/cxgb_aq100x.c
+++ b/sys/dev/cxgb/common/cxgb_aq100x.c
@@ -350,7 +350,7 @@ aq100x_set_speed_duplex(struct cphy *phy, int speed, int duplex)
 }
 
 static int
-aq100x_get_link_status(struct cphy *phy, int *link_ok, int *speed, int *duplex,
+aq100x_get_link_status(struct cphy *phy, int *link_state, int *speed, int *duplex,
 		       int *fc)
 {
 	int err;
@@ -440,8 +440,8 @@ aq100x_get_link_status(struct cphy *phy, int *link_ok, int *speed, int *duplex,
 
 	link = 1;
 done:
-	if (link_ok)
-		*link_ok = link;
+	if (link_state)
+		*link_state = link ? PHY_LINK_UP : PHY_LINK_DOWN;
 	return (0);
 }