Cross Reference: /src/sys/dev/hyperv/hyperv

Lines Matching refs:dma
114 hyperv_dma_alloc(bus_dma_tag_t dmat, struct hyperv_dma *dma, bus_size_t size,
119 	KASSERT(dma != NULL);
120 	KASSERT(dma->segs == NULL);
123 	dma->segs = kmem_zalloc(sizeof(*dma->segs) * nsegs, KM_SLEEP);
124 	dma->nsegs = nsegs;
126 	error = bus_dmamem_alloc(dmat, size, alignment, boundary, dma->segs,
133 	error = bus_dmamem_map(dmat, dma->segs, rseg, size, &dma->addr,
141 	    BUS_DMA_WAITOK, &dma->map);
147 	error = bus_dmamap_load(dmat, dma->map, dma->addr, size, NULL,
155 	memset(dma->addr, 0, dma->map->dm_mapsize);
156 	bus_dmamap_sync(dmat, dma->map, 0, dma->map->dm_mapsize,
159 	return dma->addr;
161 fail4:	bus_dmamap_destroy(dmat, dma->map);
162 fail3:	bus_dmamem_unmap(dmat, dma->addr, size);
163 	dma->addr = NULL;
164 fail2:	bus_dmamem_free(dmat, dma->segs, rseg);
165 fail1:	kmem_free(dma->segs, sizeof(*dma->segs) * nsegs);
166 	dma->segs = NULL;
167 	dma->nsegs = 0;
172 hyperv_dma_free(bus_dma_tag_t dmat, struct hyperv_dma *dma)
174 	bus_size_t size = dma->map->dm_mapsize;
175 	int rsegs = dma->map->dm_nsegs;
177 	bus_dmamap_unload(dmat, dma->map);
178 	bus_dmamap_destroy(dmat, dma->map);
179 	bus_dmamem_unmap(dmat, dma->addr, size);
180 	dma->addr = NULL;
181 	bus_dmamem_free(dmat, dma->segs, rsegs);
182 	kmem_free(dma->segs, sizeof(*dma->segs) * dma->nsegs);
183 	dma->segs = NULL;
184 	dma->nsegs = 0;
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