I40E_PF_ATQH
wr32(hw, I40E_PF_ATQH, 0);
wr32(hw, I40E_PF_ATQH, 0);
while (rd32(hw, I40E_PF_ATQH) != ntc) {
"ntc %d head %d.\n", ntc, rd32(hw, I40E_PF_ATQH));
return rd32(hw, I40E_PF_ATQH) == hw->aq.asq.next_to_use;
val = rd32(hw, I40E_PF_ATQH);