sparc64/dev/msi.c

33 	struct msi_eq *meq;
38 	meq = malloc(sizeof(struct msi_eq), M_DEVBUF, M_NOWAIT);
39 	if (meq == NULL)
47 	    BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &meq->meq_map) != 0)
50 	if (bus_dmamem_alloc(t, size, eqsize, 0, &meq->meq_seg, 1,
54 	if (bus_dmamem_map(t, &meq->meq_seg, 1, size, &va,
58 	if (bus_dmamap_load(t, meq->meq_map, va, size, NULL,
62 	meq->meq_va = va;
63 	meq->meq_nentries = msi_eq_size;
64 	meq->meq_queuesize = eqsize;
65 	meq->meq_nqueues = num_eq;
66 	return (meq);
71 	bus_dmamem_free(t, &meq->meq_seg, 1);
73 	bus_dmamap_destroy(t, meq->meq_map);
79 msi_eq_free(bus_dma_tag_t t, struct msi_eq *meq)
81 	bus_dmamap_unload(t, meq->meq_map);
82 	bus_dmamem_unmap(t, meq->meq_va, meq->meq_nqueues * meq->meq_queuesize);
83 	bus_dmamem_free(t, &meq->meq_seg, 1);
84 	bus_dmamap_destroy(t, meq->meq_map);
85 	free(meq, M_DEVBUF, sizeof *meq);
89 msi_eq_offset(struct msi_eq *meq, int eq)
91 	return (meq->meq_queuesize * eq);