atari/isa/isa_dma.c

208 	struct atari_isa_dma_cookie *cookie;
211 	if ((cookie = kmem_zalloc(isadma_bounce_cookiesize(map, cookieflags),
216 	cookie->id_flags = cookieflags;
217 	map->_dm_cookie = cookie;
225 	struct atari_isa_dma_cookie *cookie = map->_dm_cookie;
227 	if (cookie != NULL) {
229 		    isadma_bounce_cookiesize(map, cookie->id_flags));
240 	struct atari_isa_dma_cookie *cookie;
254 	 * Allocate our cookie.
259 	cookie = map->_dm_cookie;
261 	if (cookie->id_flags & ID_MIGHT_NEED_BOUNCE) {
285 	struct atari_isa_dma_cookie *cookie = map->_dm_cookie;
290 	if (cookie->id_flags & ID_HAS_BOUNCE)
304 	struct atari_isa_dma_cookie *cookie = map->_dm_cookie;
320 	if (error == 0 || (cookie->id_flags & ID_MIGHT_NEED_BOUNCE) == 0)
332 	if ((cookie->id_flags & ID_HAS_BOUNCE) == 0) {
342 	cookie->id_origbuf = buf;
343 	cookie->id_origbuflen = buflen;
344 	cookie->id_buftype = ID_BUFTYPE_LINEAR;
345 	error = _bus_dmamap_load(t, map, cookie->id_bouncebuf, buflen,
358 	cookie->id_flags |= ID_IS_BOUNCING;
369 	struct atari_isa_dma_cookie *cookie = map->_dm_cookie;
391 	if (error == 0 || (cookie->id_flags & ID_MIGHT_NEED_BOUNCE) == 0)
403 	if ((cookie->id_flags & ID_HAS_BOUNCE) == 0) {
414 	cookie->id_origbuf = m0;
415 	cookie->id_origbuflen = m0->m_pkthdr.len;	/* not really used */
416 	cookie->id_buftype = ID_BUFTYPE_MBUF;
417 	error = _bus_dmamap_load(t, map, cookie->id_bouncebuf,
430 	cookie->id_flags |= ID_IS_BOUNCING;
461 	struct atari_isa_dma_cookie *cookie = map->_dm_cookie;
467 	if ((cookie->id_flags & ID_HAS_BOUNCE) &&
471 	cookie->id_flags &= ~ID_IS_BOUNCING;
472 	cookie->id_buftype = ID_BUFTYPE_INVALID;
486 	struct atari_isa_dma_cookie *cookie = map->_dm_cookie;
507 	if ((cookie->id_flags & ID_IS_BOUNCING) == 0)
510 	switch (cookie->id_buftype) {
520 			memcpy((char *)cookie->id_bouncebuf + offset,
521 			    (char *)cookie->id_origbuf + offset, len);
528 			memcpy((char *)cookie->id_origbuf + offset,
529 			    (char *)cookie->id_bouncebuf + offset, len);
539 		struct mbuf *m, *m0 = cookie->id_origbuf;
551 			    (char *)cookie->id_bouncebuf + offset);
575 				    (char *)cookie->id_bouncebuf + offset,
603 		printf("unknown buffer type %d\n", cookie->id_buftype);
632 	struct atari_isa_dma_cookie *cookie = map->_dm_cookie;
635 	cookie->id_bouncebuflen = round_page(size);
636 	error = _isa_bus_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;
662 	struct atari_isa_dma_cookie *cookie = map->_dm_cookie;
666 	bus_dmamem_unmap(t, cookie->id_bouncebuf,
667 	    cookie->id_bouncebuflen);
668 	bus_dmamem_free(t, cookie->id_bouncesegs,
669 	    cookie->id_nbouncesegs);
670 	cookie->id_bouncebuflen = 0;
671 	cookie->id_nbouncesegs = 0;
672 	cookie->id_flags &= ~ID_HAS_BOUNCE;