AAC_HI32
ddi_put32(acc, AAC_HI32(&io->BlockNumber), AAC_MS32(acp->blkno));
ddi_put32(acc, AAC_HI32(&sgp->SgAddress), sge->addr.ad64.hi);
ddi_put32(acc, AAC_HI32(&sgp->SgAddress), sge->addr.ad64.hi);
ddi_put32(acc, AAC_HI32(&sgp->SgAddress), sge->addr.ad64.hi);