arc/isa/isadma_bounce.c

168 	struct isadma_bounce_cookie *cookie;
171 	if ((cookie = kmem_zalloc(isadma_bounce_cookiesize(map, cookieflags),
176 	cookie->id_flags = cookieflags;
177 	map->_dm_cookie = cookie;
185 	struct isadma_bounce_cookie *cookie = map->_dm_cookie;
187 	if (cookie != NULL) {
189 		    isadma_bounce_cookiesize(map, cookie->id_flags));
221 	struct isadma_bounce_cookie *cookie;
235 	 * Allocate our cookie.
240 	cookie = map->_dm_cookie;
242 	if (cookie->id_flags & ID_MIGHT_NEED_BOUNCE) {
267 	struct isadma_bounce_cookie *cookie = map->_dm_cookie;
272 	if (cookie->id_flags & ID_HAS_BOUNCE)
286 	struct isadma_bounce_cookie *cookie = map->_dm_cookie;
300 	if (error == 0 || (cookie->id_flags & ID_MIGHT_NEED_BOUNCE) == 0)
310 	if ((cookie->id_flags & ID_HAS_BOUNCE) == 0) {
320 	cookie->id_origbuf = buf;
321 	cookie->id_origbuflen = buflen;
322 	cookie->id_buftype = ID_BUFTYPE_LINEAR;
323 	error = _bus_dmamap_load(t, map, cookie->id_bouncebuf, buflen,
336 	cookie->id_flags |= ID_IS_BOUNCING;
347 	struct isadma_bounce_cookie *cookie = map->_dm_cookie;
369 	if (error == 0 || (cookie->id_flags & ID_MIGHT_NEED_BOUNCE) == 0)
379 	if ((cookie->id_flags & ID_HAS_BOUNCE) == 0) {
390 	cookie->id_origbuf = m0;
391 	cookie->id_origbuflen = m0->m_pkthdr.len;	/* not really used */
392 	cookie->id_buftype = ID_BUFTYPE_MBUF;
393 	error = _bus_dmamap_load(t, map, cookie->id_bouncebuf,
406 	cookie->id_flags |= ID_IS_BOUNCING;
439 	struct isadma_bounce_cookie *cookie = map->_dm_cookie;
445 	if ((cookie->id_flags & ID_HAS_BOUNCE) &&
449 	cookie->id_flags &= ~ID_IS_BOUNCING;
450 	cookie->id_buftype = ID_BUFTYPE_INVALID;
465 	struct isadma_bounce_cookie *cookie = map->_dm_cookie;
490 	if ((cookie->id_flags & ID_IS_BOUNCING) == 0) {
504 	switch (cookie->id_buftype) {
514 			memcpy((char *)cookie->id_bouncebuf + offset,
515 			    (char *)cookie->id_origbuf + offset, len);
522 			memcpy((char *)cookie->id_origbuf + offset,
523 			    (char *)cookie->id_bouncebuf + offset, len);
533 		struct mbuf *m, *m0 = cookie->id_origbuf;
545 			    (char *)cookie->id_bouncebuf + offset);
569 				    (char *)cookie->id_bouncebuf + offset,
597 		printf("unknown buffer type %d\n", cookie->id_buftype);
632 	struct isadma_bounce_cookie *cookie = map->_dm_cookie;
635 	cookie->id_bouncebuflen = round_page(size);
636 	error = isadma_bounce_dmamem_alloc(t, cookie->id_bouncebuflen,
637 	    PAGE_SIZE, map->_dm_boundary, cookie->id_bouncesegs,
638 	    map->_dm_segcnt, &cookie->id_nbouncesegs, flags);
641 	error = _bus_dmamem_map(t, cookie->id_bouncesegs,
642 	    cookie->id_nbouncesegs, cookie->id_bouncebuflen,
643 	    (void **)&cookie->id_bouncebuf, flags);
647 		_bus_dmamem_free(t, cookie->id_bouncesegs,
648 		    cookie->id_nbouncesegs);
649 		cookie->id_bouncebuflen = 0;
650 		cookie->id_nbouncesegs = 0;
652 		cookie->id_flags |= ID_HAS_BOUNCE;
660 	struct isadma_bounce_cookie *cookie = map->_dm_cookie;
662 	_bus_dmamem_unmap(t, cookie->id_bouncebuf,
663 	    cookie->id_bouncebuflen);
664 	_bus_dmamem_free(t, cookie->id_bouncesegs,
665 	    cookie->id_nbouncesegs);
666 	cookie->id_bouncebuflen = 0;
667 	cookie->id_nbouncesegs = 0;
668 	cookie->id_flags &= ~ID_HAS_BOUNCE;