MR_PD_LIST
struct MR_PD_LIST *pd_list_mem;
pd_list_size = MRSAS_MAX_PD * sizeof(struct MR_PD_LIST);
dcmd->data_xfer_len = htole32(MRSAS_MAX_PD * sizeof(struct MR_PD_LIST));
dcmd->sgl.sge32[0].length = htole32(MRSAS_MAX_PD * sizeof(struct MR_PD_LIST));