dist/bsd-core/drm_scatter.c

48 	struct drm_dma_handle *dmah;
75 	dmah = malloc(sizeof(struct drm_dma_handle), DRM_MEM_DMA,
77 	if (dmah == NULL) {
89 	    &dmah->tag);
91 		free(dmah, DRM_MEM_DMA);
97 	ret = bus_dmamem_alloc(dmah->tag, &dmah->vaddr,
98 	    BUS_DMA_WAITOK | BUS_DMA_ZERO, &dmah->map);
100 		bus_dma_tag_destroy(dmah->tag);
101 		free(dmah, DRM_MEM_DMA);
107 	ret = bus_dmamap_load(dmah->tag, dmah->map, dmah->vaddr,
111 		bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map);
112 		bus_dma_tag_destroy(dmah->tag);
113 		free(dmah, DRM_MEM_DMA);
119 	dmah = malloc(sizeof(struct drm_dma_handle) +
122 	if (dmah == NULL) {
128 	dmah->tag = dev->pa.pa_dmat;
130 	if ((ret = bus_dmamem_alloc(dmah->tag, request->size, PAGE_SIZE, 0,
131 				    dmah->segs, pages, &nsegs,
135 		dmah->tag = NULL;
136 		free(dmah, DRM_MEM_DMA);
142 	dmah->nsegs = nsegs;
143 	if ((ret = bus_dmamem_map(dmah->tag, dmah->segs, nsegs, request->size,
144 				  &dmah->vaddr, BUS_DMA_NOWAIT |
147 		bus_dmamem_free(dmah->tag, dmah->segs, dmah->nsegs);
148 		dmah->tag = NULL;
149 		free(dmah, DRM_MEM_DMA);
154 	if ((ret = bus_dmamap_create(dmah->tag, request->size, nsegs,
156 				     &dmah->map)) != 0) {
158 		bus_dmamem_unmap(dmah->tag, dmah->vaddr, request->size);
159 		bus_dmamem_free(dmah->tag, dmah->segs, nsegs);
160 		dmah->tag = NULL;
161 		free(dmah, DRM_MEM_DMA);
166 	if ((ret = bus_dmamap_load(dmah->tag, dmah->map, dmah->vaddr,
170 		bus_dmamap_destroy(dmah->tag, dmah->map);
171 		bus_dmamem_unmap(dmah->tag, dmah->vaddr, request->size);
172 		bus_dmamem_free(dmah->tag, dmah->segs, dmah->nsegs);
173 		dmah->tag = NULL;
174 		free(dmah, DRM_MEM_DMA);
183 		bus_addr_t base = dmah->map->dm_segs[i].ds_addr;
187 		     (offs + PAGE_SIZE <= dmah->map->dm_segs[i].ds_len) &&
194 	dmah->size = request->size;
195 	memset(dmah->vaddr, 0, request->size);
198 	entry->sg_dmah = dmah;
199 	entry->handle = (unsigned long)dmah->vaddr;
248 	struct drm_dma_handle *dmah = entry->sg_dmah;
251 	bus_dmamap_unload(dmah->tag, dmah->map);
252 	bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map);
253 	bus_dma_tag_destroy(dmah->tag);
255 	bus_dmamap_unload(dmah->tag, dmah->map);
256 	bus_dmamap_destroy(dmah->tag, dmah->map);
257 	bus_dmamem_unmap(dmah->tag, dmah->vaddr, dmah->size);
258 	bus_dmamem_free(dmah->tag, dmah->segs, dmah->nsegs);
259 	dmah->tag = NULL;
261 	free(dmah, DRM_MEM_DMA);