tools/bus_space/busdma.c

63 		} tag;
145 	struct obj *tag;
147 	tag = obj_alloc(OBJ_TYPE_TAG);
148 	if (tag == NULL)
155 	ioc.u.tag.align = align;
156 	ioc.u.tag.bndry = bndry;
157 	ioc.u.tag.maxaddr = maxaddr;
158 	ioc.u.tag.maxsz = maxsz;
159 	ioc.u.tag.nsegs = nsegs;
160 	ioc.u.tag.maxsegsz = maxsegsz;
161 	ioc.u.tag.datarate = datarate;
162 	ioc.u.tag.flags = flags;
164 		obj_free(tag);
167 	tag->refcnt = 1;
168 	tag->fd = fd;
169 	tag->parent = ptag;
170 	tag->key = ioc.result;
171 	tag->u.tag.align = ioc.u.tag.align;
172 	tag->u.tag.bndry = ioc.u.tag.bndry;
173 	tag->u.tag.maxaddr = ioc.u.tag.maxaddr;
174 	tag->u.tag.maxsz = ioc.u.tag.maxsz;
175 	tag->u.tag.maxsegsz = ioc.u.tag.maxsegsz;
176 	tag->u.tag.nsegs = ioc.u.tag.nsegs;
177 	tag->u.tag.datarate = ioc.u.tag.datarate;
178 	return (tag);
186 	struct obj *tag;
198 	tag = bd_tag_new(NULL, fd, align, bndry, maxaddr, maxsz, nsegs,
200 	if (tag == NULL) {
204 	return (tag->oid);
211 	struct obj *ptag, *tag;
217 	tag = bd_tag_new(ptag, ptag->fd, align, bndry, maxaddr, maxsz, nsegs,
219 	if (tag == NULL)
222 	return (tag->oid);
229 	struct obj *ptag, *tag;
231 	tag = obj_lookup(tid, OBJ_TYPE_TAG);
232 	if (tag == NULL)
234 	if (tag->refcnt > 1)
239 	ioc.key = tag->key;
240 	if (ioctl(tag->fd, PROTO_IOC_BUSDMA, &ioc) == -1)
243 	if (tag->parent != NULL)
244 		tag->parent->refcnt--;
246 		close(tag->fd);
247 	obj_free(tag);
287 	struct obj *md, *tag;
289 	tag = obj_lookup(tid, OBJ_TYPE_TAG);
290 	if (tag == NULL)
299 	ioc.u.md.tag = tag->key;
301 	if (ioctl(tag->fd, PROTO_IOC_BUSDMA, &ioc) == -1) {
307 	md->fd = tag->fd;
308 	md->parent = tag;
309 	tag->refcnt++;
388 	struct obj *md, *tag;
392 	tag = obj_lookup(tid, OBJ_TYPE_TAG);
393 	if (tag == NULL)
402 	ioc.u.md.tag = tag->key;
404 	if (ioctl(tag->fd, PROTO_IOC_BUSDMA, &ioc) == -1) {
410 	md->fd = tag->fd;
411 	md->parent = tag;
412 	tag->refcnt++;
419 	    tag->u.tag.maxsz);
421 	    tag->u.tag.maxsz);
423 	addr = (uintptr_t)mmap(NULL, tag->u.tag.maxsz, PROT_READ | PROT_WRITE,
427 	error = bd_md_add_seg(md, BUSDMA_MD_VIRT, addr, tag->u.tag.maxsz);