L2_DTE_LOG2_ENTRIES
#define L2_DTE_ENTRIES(l2sz) (1ul << L2_DTE_LOG2_ENTRIES(l2sz))
n = MAX(2, devid_bits - L2_DTE_LOG2_ENTRIES(l2sz) + 2);
sc->its_dl.its_dev_dte_l2bits = L2_DTE_LOG2_ENTRIES(l2sz);