S_SMTW_IDX
#define V_SMTW_IDX(x) ((x) << S_SMTW_IDX)
#define G_SMTW_IDX(x) (((x) >> S_SMTW_IDX) & M_SMTW_IDX)
#define G_T6_SMTW_IDX(x) (((x) >> S_SMTW_IDX) & M_T6_SMTW_IDX)