IB/ipath: control receive polarity inversion
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/ipath/ipath_iba6110.c b/drivers/infiniband/hw/ipath/ipath_iba6110.c
index 7028c98..bf2455a 100644
--- a/drivers/infiniband/hw/ipath/ipath_iba6110.c
+++ b/drivers/infiniband/hw/ipath/ipath_iba6110.c
@@ -1290,6 +1290,15 @@
val &= ~INFINIPATH_XGXS_RESET;
change = 1;
}
+ if (((val >> INFINIPATH_XGXS_RX_POL_SHIFT) &
+ INFINIPATH_XGXS_RX_POL_MASK) != dd->ipath_rx_pol_inv ) {
+ /* need to compensate for Tx inversion in partner */
+ val &= ~(INFINIPATH_XGXS_RX_POL_MASK <<
+ INFINIPATH_XGXS_RX_POL_SHIFT);
+ val |= dd->ipath_rx_pol_inv <<
+ INFINIPATH_XGXS_RX_POL_SHIFT;
+ change = 1;
+ }
if (change)
ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);