NV_ADMA_SGTBL_LEN
&pp->aprd[NV_ADMA_SGTBL_LEN * qc->hw_tag + (si-5)];
NV_ADMA_SGTBL_TOTAL_LEN = NV_ADMA_SGTBL_LEN + 5,
NV_ADMA_SGTBL_SZ = NV_ADMA_SGTBL_LEN * NV_ADMA_APRD_SZ,