+ /*
+ * On typical system, the delta between lo and lo2 is ~1000ns,
+ * so 10000 seems a large-enough but not overly-big guard band.
+ */
+ if (lo > (UINT32_MAX - ICE_TIMESYNC_REG_WRAP_GUARD_BAND))
+ lo2 = ICE_READ_REG(hw, GLTSYN_TIME_L(0));
+ else
+ lo2 = lo;
+
+ if (lo2 < lo) {
+ lo = ICE_READ_REG(hw, GLTSYN_TIME_L(0));
+ hi = ICE_READ_REG(hw, GLTSYN_TIME_H(0));
+ }
+
+ ad->time_hw = ((uint64_t)hi << 32) | lo;
+ }