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Lines Matching defs:sg

59 	struct drm_sg_mem *sg = NULL;
73 	if (dev->sg != NULL)
84 	error = drm_sg_alloc_mem(dev, request->size, &sg);
89 	dev->sg = sg;
92 	request->handle = sg->handle;
100 	struct drm_sg_mem *sg;
110 	sg = dev->sg;
111 	if (sg == NULL)
113 	if (sg->handle != request->handle)
116 	/* Remove dev->sg.  */
117 	dev->sg = NULL;
120 	drm_sg_free_mem(dev, sg);
132 	if (dev->sg == NULL)
137 	drm_sg_free_mem(dev, dev->sg);
156 	struct drm_sg_mem *const sg =
159 	if (sg == NULL)
161 	sg->sg_tag = dev->dmat;
162 	sg->sg_nsegs_max = (unsigned int)npages;
167 	KASSERT(sg->sg_nsegs_max <= (unsigned int)INT_MAX);
169 	error = -bus_dmamem_alloc(sg->sg_tag, nbytes, PAGE_SIZE, 0,
170 	    sg->sg_segs, (int)sg->sg_nsegs_max, &nsegs, BUS_DMA_NOWAIT);
174 	sg->sg_nsegs = (unsigned int)nsegs;
185 	error = -bus_dmamem_map(sg->sg_tag, sg->sg_segs, nsegs, nbytes,
186 	    &sg->virtual,
190 	sg->sg_size = nbytes;
196 	error = -bus_dmamap_create(sg->sg_tag, nbytes, nsegs, nbytes, 0,
197 	    BUS_DMA_NOWAIT, &sg->sg_map);
205 	error = -bus_dmamap_load(sg->sg_tag, sg->sg_map, sg->virtual, nbytes,
216 	sg->handle = (unsigned long)(uintptr_t)sg->virtual;
217 	KASSERT(sg->virtual == (void *)(uintptr_t)sg->handle);
220 	*sgp = sg;
223 fail3:	bus_dmamap_destroy(sg->sg_tag, sg->sg_map);
224 fail2:	bus_dmamem_unmap(sg->sg_tag, sg->virtual, sg->sg_size);
225 fail1:	KASSERT(sg->sg_nsegs <= (unsigned int)INT_MAX);
226 	bus_dmamem_free(sg->sg_tag, sg->sg_segs, (int)sg->sg_nsegs);
227 fail0:	sg->sg_tag = NULL;	/* XXX paranoia */
228 	kmem_free(sg, offsetof(struct drm_sg_mem, sg_segs[sg->sg_nsegs_max]));
233 drm_sg_free_mem(struct drm_device *dev, struct drm_sg_mem *sg)
236 	bus_dmamap_unload(sg->sg_tag, sg->sg_map);
237 	bus_dmamap_destroy(sg->sg_tag, sg->sg_map);
238 	bus_dmamem_unmap(sg->sg_tag, sg->virtual, sg->sg_size);
239 	KASSERT(sg->sg_nsegs <= (unsigned int)INT_MAX);
240 	bus_dmamem_free(sg->sg_tag, sg->sg_segs, (int)sg->sg_nsegs);
241 	sg->sg_tag = NULL;	/* XXX paranoia */
242 	kmem_free(sg, offsetof(struct drm_sg_mem, sg_segs[sg->sg_nsegs_max]));