65 	struct proto_tag *tag;  in proto_busdma_tag_create()  local
68 	if (ioc->u.tag.bndry != 0 &&  in proto_busdma_tag_create()
69 	    (ioc->u.tag.bndry & (ioc->u.tag.bndry - 1)) != 0)  in proto_busdma_tag_create()
77 	if (ioc->u.tag.maxsegsz > ioc->u.tag.maxsz || ioc->u.tag.nsegs == 1)  in proto_busdma_tag_create()
78 		ioc->u.tag.maxsegsz = ioc->u.tag.maxsz;  in proto_busdma_tag_create()
80 	tag = malloc(sizeof(*tag), M_PROTO_BUSDMA, M_WAITOK | M_ZERO);  in proto_busdma_tag_create()
82 		tag->parent = parent;  in proto_busdma_tag_create()
83 		LIST_INSERT_HEAD(&parent->children, tag, peers);  in proto_busdma_tag_create()
84 		tag->align = MAX(ioc->u.tag.align, parent->align);  in proto_busdma_tag_create()
85 		tag->bndry = BNDRY_MIN(ioc->u.tag.bndry, parent->bndry);  in proto_busdma_tag_create()
86 		tag->maxaddr = MIN(ioc->u.tag.maxaddr, parent->maxaddr);  in proto_busdma_tag_create()
87 		tag->maxsz = MIN(ioc->u.tag.maxsz, parent->maxsz);  in proto_busdma_tag_create()
88 		tag->maxsegsz = MIN(ioc->u.tag.maxsegsz, parent->maxsegsz);  in proto_busdma_tag_create()
89 		tag->nsegs = MIN(ioc->u.tag.nsegs, parent->nsegs);  in proto_busdma_tag_create()
90 		tag->datarate = MIN(ioc->u.tag.datarate, parent->datarate);  in proto_busdma_tag_create()
92 		ioc->u.tag.align = tag->align;  in proto_busdma_tag_create()
93 		ioc->u.tag.bndry = tag->bndry;  in proto_busdma_tag_create()
94 		ioc->u.tag.maxaddr = tag->maxaddr;  in proto_busdma_tag_create()
95 		ioc->u.tag.maxsz = tag->maxsz;  in proto_busdma_tag_create()
96 		ioc->u.tag.maxsegsz = tag->maxsegsz;  in proto_busdma_tag_create()
97 		ioc->u.tag.nsegs = tag->nsegs;  in proto_busdma_tag_create()
98 		ioc->u.tag.datarate = tag->datarate;  in proto_busdma_tag_create()
100 		tag->align = ioc->u.tag.align;  in proto_busdma_tag_create()
101 		tag->bndry = ioc->u.tag.bndry;  in proto_busdma_tag_create()
102 		tag->maxaddr = ioc->u.tag.maxaddr;  in proto_busdma_tag_create()
103 		tag->maxsz = ioc->u.tag.maxsz;  in proto_busdma_tag_create()
104 		tag->maxsegsz = ioc->u.tag.maxsegsz;  in proto_busdma_tag_create()
105 		tag->nsegs = ioc->u.tag.nsegs;  in proto_busdma_tag_create()
106 		tag->datarate = ioc->u.tag.datarate;  in proto_busdma_tag_create()
108 	LIST_INSERT_HEAD(&busdma->tags, tag, tags);  in proto_busdma_tag_create()
109 	ioc->result = (uintptr_t)(void *)tag;  in proto_busdma_tag_create()
114 proto_busdma_tag_destroy(struct proto_busdma *busdma, struct proto_tag *tag)  in proto_busdma_tag_destroy()  argument
117 	if (!LIST_EMPTY(&tag->mds))  in proto_busdma_tag_destroy()
119 	if (!LIST_EMPTY(&tag->children))  in proto_busdma_tag_destroy()
122 	if (tag->parent != NULL) {  in proto_busdma_tag_destroy()
123 		LIST_REMOVE(tag, peers);  in proto_busdma_tag_destroy()
124 		tag->parent = NULL;  in proto_busdma_tag_destroy()
126 	LIST_REMOVE(tag, tags);  in proto_busdma_tag_destroy()
127 	free(tag, M_PROTO_BUSDMA);  in proto_busdma_tag_destroy()
134 	struct proto_tag *tag;  in proto_busdma_tag_lookup()  local
136 	LIST_FOREACH(tag, &busdma->tags, tags) {  in proto_busdma_tag_lookup()
137 		if ((void *)tag == (void *)key)  in proto_busdma_tag_lookup()
138 			return (tag);  in proto_busdma_tag_lookup()
172 proto_busdma_mem_alloc(struct proto_busdma *busdma, struct proto_tag *tag,  in proto_busdma_mem_alloc()  argument
180 	md->tag = tag;  in proto_busdma_mem_alloc()
182 	error = bus_dma_tag_create(busdma->bd_roottag, tag->align, tag->bndry,  in proto_busdma_mem_alloc()
183 	    tag->maxaddr, BUS_SPACE_MAXADDR, NULL, NULL, tag->maxsz,  in proto_busdma_mem_alloc()
184 	    tag->nsegs, tag->maxsegsz, 0, NULL, NULL, &md->bd_tag);  in proto_busdma_mem_alloc()
200 	    tag->maxsz, proto_busdma_mem_alloc_callback, &pcb, BUS_DMA_NOWAIT);  in proto_busdma_mem_alloc()
207 	LIST_INSERT_HEAD(&tag->mds, md, peers);  in proto_busdma_mem_alloc()
210 	ioc->u.md.virt_size = tag->maxsz;  in proto_busdma_mem_alloc()
227 proto_busdma_md_create(struct proto_busdma *busdma, struct proto_tag *tag,  in proto_busdma_md_create()  argument
234 	md->tag = tag;  in proto_busdma_md_create()
236 	error = bus_dma_tag_create(busdma->bd_roottag, tag->align, tag->bndry,  in proto_busdma_md_create()
237 	    tag->maxaddr, BUS_SPACE_MAXADDR, NULL, NULL, tag->maxsz,  in proto_busdma_md_create()
238 	    tag->nsegs, tag->maxsegsz, 0, NULL, NULL, &md->bd_tag);  in proto_busdma_md_create()
250 	LIST_INSERT_HEAD(&tag->mds, md, peers);  in proto_busdma_md_create()
374 	struct proto_tag *tag, *tag1;  in proto_busdma_cleanup()  local
379 	LIST_FOREACH_SAFE(tag, &busdma->tags, tags, tag1)  in proto_busdma_cleanup()
380 		proto_busdma_tag_destroy(busdma, tag);  in proto_busdma_cleanup()
389 	struct proto_tag *tag;  in proto_busdma_ioctl()  local
402 		tag = proto_busdma_tag_lookup(busdma, ioc->key);  in proto_busdma_ioctl()
403 		if (tag == NULL) {  in proto_busdma_ioctl()
407 		error = proto_busdma_tag_create(busdma, tag, ioc);  in proto_busdma_ioctl()
410 		tag = proto_busdma_tag_lookup(busdma, ioc->key);  in proto_busdma_ioctl()
411 		if (tag == NULL) {  in proto_busdma_ioctl()
415 		error = proto_busdma_tag_destroy(busdma, tag);  in proto_busdma_ioctl()
418 		tag = proto_busdma_tag_lookup(busdma, ioc->u.md.tag);  in proto_busdma_ioctl()
419 		if (tag == NULL) {  in proto_busdma_ioctl()
423 		error = proto_busdma_mem_alloc(busdma, tag, ioc);  in proto_busdma_ioctl()
434 		tag = proto_busdma_tag_lookup(busdma, ioc->u.md.tag);  in proto_busdma_ioctl()
435 		if (tag == NULL) {  in proto_busdma_ioctl()
439 		error = proto_busdma_md_create(busdma, tag, ioc);  in proto_busdma_ioctl()
494 		    physaddr <= trunc_page(md->physaddr + md->tag->maxsz)) {  in proto_busdma_mmap_allowed()