dev/proto/proto_busdma.c

59 	struct proto_md *md;
147     struct proto_md *md)
150 	LIST_REMOVE(md, mds);
151 	LIST_REMOVE(md, peers);
152 	if (md->physaddr)
153 		bus_dmamap_unload(md->bd_tag, md->bd_map);
154 	if (md->virtaddr != NULL)
155 		bus_dmamem_free(md->bd_tag, md->virtaddr, md->bd_map);
157 		bus_dmamap_destroy(md->bd_tag, md->bd_map);
158 	bus_dma_tag_destroy(md->bd_tag);
159 	free(md, M_PROTO_BUSDMA);
169 	pcb->ioc->u.md.bus_nsegs = nseg;
170 	pcb->ioc->u.md.bus_addr = segs[0].ds_addr;
178 	struct proto_md *md;
181 	md = malloc(sizeof(*md), M_PROTO_BUSDMA, M_WAITOK | M_ZERO);
182 	md->tag = tag;
186 	    tag->nsegs, tag->maxsegsz, 0, NULL, NULL, &md->bd_tag);
188 		free(md, M_PROTO_BUSDMA);
191 	error = bus_dmamem_alloc(md->bd_tag, &md->virtaddr, 0, &md->bd_map);
193 		bus_dma_tag_destroy(md->bd_tag);
194 		free(md, M_PROTO_BUSDMA);
197 	md->physaddr = pmap_kextract((uintptr_t)(md->virtaddr));
199 	pcb.md = md;
201 	error = bus_dmamap_load(md->bd_tag, md->bd_map, md->virtaddr,
204 		bus_dmamem_free(md->bd_tag, md->virtaddr, md->bd_map);
205 		bus_dma_tag_destroy(md->bd_tag);
206 		free(md, M_PROTO_BUSDMA);
209 	LIST_INSERT_HEAD(&tag->mds, md, peers);
210 	LIST_INSERT_HEAD(&busdma->mds, md, mds);
211 	ioc->u.md.virt_addr = (uintptr_t)md->virtaddr;
212 	ioc->u.md.virt_size = tag->maxsz;
213 	ioc->u.md.phys_nsegs = 1;
214 	ioc->u.md.phys_addr = md->physaddr;
215 	ioc->result = (uintptr_t)(void *)md;
220 proto_busdma_mem_free(struct proto_busdma *busdma, struct proto_md *md)
223 	if (md->virtaddr == NULL)
225 	return (proto_busdma_md_destroy_internal(busdma, md));
232 	struct proto_md *md;
235 	md = malloc(sizeof(*md), M_PROTO_BUSDMA, M_WAITOK | M_ZERO);
236 	md->tag = tag;
240 	    tag->nsegs, tag->maxsegsz, 0, NULL, NULL, &md->bd_tag);
242 		free(md, M_PROTO_BUSDMA);
245 	error = bus_dmamap_create(md->bd_tag, 0, &md->bd_map);
247 		bus_dma_tag_destroy(md->bd_tag);
248 		free(md, M_PROTO_BUSDMA);
252 	LIST_INSERT_HEAD(&tag->mds, md, peers);
253 	LIST_INSERT_HEAD(&busdma->mds, md, mds);
254 	ioc->result = (uintptr_t)(void *)md;
259 proto_busdma_md_destroy(struct proto_busdma *busdma, struct proto_md *md)
262 	if (md->virtaddr != NULL)
264 	return (proto_busdma_md_destroy_internal(busdma, md));
273 	pcb->ioc->u.md.bus_nsegs = nseg;
274 	pcb->ioc->u.md.bus_addr = segs[0].ds_addr;
278 proto_busdma_md_load(struct proto_busdma *busdma, struct proto_md *md,
287 	iov.iov_base = (void *)(uintptr_t)ioc->u.md.virt_addr;
288 	iov.iov_len = ioc->u.md.virt_size;
298 	pcb.md = md;
300 	error = bus_dmamap_load_uio(md->bd_tag, md->bd_map, &uio,
307 	md->physaddr = pmap_extract(pmap, ioc->u.md.virt_addr);
308 	ioc->u.md.phys_nsegs = 1;	/* XXX */
309 	ioc->u.md.phys_addr = md->physaddr;
314 proto_busdma_md_unload(struct proto_busdma *busdma, struct proto_md *md)
317 	if (!md->physaddr)
319 	bus_dmamap_unload(md->bd_tag, md->bd_map);
320 	md->physaddr = 0;
325 proto_busdma_sync(struct proto_busdma *busdma, struct proto_md *md,
334 	if (!md->physaddr)
336 	bus_dmamap_sync(md->bd_tag, md->bd_map, ioc->u.sync.op);
343 	struct proto_md *md;
345 	LIST_FOREACH(md, &busdma->mds, mds) {
346 		if ((void *)md == (void *)key)
347 			return (md);
373 	struct proto_md *md, *md1;
376 	LIST_FOREACH_SAFE(md, &busdma->mds, mds, md1)
377 		proto_busdma_md_destroy_internal(busdma, md);
388 	struct proto_md *md;
414 		tag = proto_busdma_tag_lookup(busdma, ioc->u.md.tag);
422 		md = proto_busdma_md_lookup(busdma, ioc->key);
423 		if (md == NULL) {
427 		error = proto_busdma_mem_free(busdma, md);
430 		tag = proto_busdma_tag_lookup(busdma, ioc->u.md.tag);
438 		md = proto_busdma_md_lookup(busdma, ioc->key);
439 		if (md == NULL) {
443 		error = proto_busdma_md_destroy(busdma, md);
446 		md = proto_busdma_md_lookup(busdma, ioc->key);
447 		if (md == NULL) {
451 		error = proto_busdma_md_load(busdma, md, ioc, td);
454 		md = proto_busdma_md_lookup(busdma, ioc->key);
455 		if (md == NULL) {
459 		error = proto_busdma_md_unload(busdma, md);
462 		md = proto_busdma_md_lookup(busdma, ioc->key);
463 		if (md == NULL) {
467 		error = proto_busdma_sync(busdma, md, ioc);
479 	struct proto_md *md;
481 	LIST_FOREACH(md, &busdma->mds, mds) {
482 		if (physaddr >= trunc_page(md->physaddr) &&
483 		    physaddr <= trunc_page(md->physaddr + md->tag->maxsz))