alphabus_dma_get_tag
alphabus_dma_get_tag(&acp->ac_dmat_direct, ALPHA_BUS_PCI);
alphabus_dma_get_tag(&ccp->cc_dmat_direct, ALPHA_BUS_PCI);
alphabus_dma_get_tag(&icp->ic_dmat_pci, ALPHA_BUS_PCI);
alphabus_dma_get_tag(&lcp->lc_dmat_direct, ALPHA_BUS_PCI);
alphabus_dma_get_tag(&ccp->cc_dmat_direct, ALPHA_BUS_PCI);
alphabus_dma_get_tag(sc->sc_dmat, ALPHA_BUS_EISA);
alphabus_dma_get_tag(sc->sc_dmat, ALPHA_BUS_ISA);
alphabus_dma_get_tag(&pcp->pc_dmat_direct, ALPHA_BUS_PCI);
ed->ed_dmat = alphabus_dma_get_tag(sc->sc_dmat, ALPHA_BUS_ISA);