evbmips/isa/isadma_bounce.c

65 	struct mips_bus_dma_cookie *cookie;
80 	cookiesize = sizeof(*cookie);
110 	 * Allocate our cookie.
118 	cookie = (struct mips_bus_dma_cookie *)cookiestore;
119 	cookie->id_flags = cookieflags;
120 	map->_dm_cookie = cookie;
148 	struct mips_bus_dma_cookie *cookie = map->_dm_cookie;
153 	if (cookie->id_flags & _BUS_DMA_HAS_BOUNCE)
156 	free(cookie, M_DMAMAP);
167 	struct mips_bus_dma_cookie *cookie = map->_dm_cookie;
181 	if (error == 0 || (cookie->id_flags & _BUS_DMA_MIGHT_NEED_BOUNCE) == 0)
191 	if ((cookie->id_flags & _BUS_DMA_HAS_BOUNCE) == 0) {
201 	cookie->id_origbuf = buf;
202 	cookie->id_origbuflen = buflen;
203 	cookie->id_buftype = _BUS_DMA_BUFTYPE_LINEAR;
204 	error = _bus_dmamap_load(t, map, cookie->id_bouncebuf, buflen,
217 	cookie->id_flags |= _BUS_DMA_IS_BOUNCING;
228 	struct mips_bus_dma_cookie *cookie = map->_dm_cookie;
250 	if (error == 0 || (cookie->id_flags & _BUS_DMA_MIGHT_NEED_BOUNCE) == 0)
260 	if ((cookie->id_flags & _BUS_DMA_HAS_BOUNCE) == 0) {
271 	cookie->id_origbuf = m0;
272 	cookie->id_origbuflen = m0->m_pkthdr.len;	/* not really used */
273 	cookie->id_buftype = _BUS_DMA_BUFTYPE_MBUF;
274 	error = _bus_dmamap_load(t, map, cookie->id_bouncebuf,
287 	cookie->id_flags |= _BUS_DMA_IS_BOUNCING;
320 	struct mips_bus_dma_cookie *cookie = map->_dm_cookie;
326 	if ((cookie->id_flags & _BUS_DMA_HAS_BOUNCE) &&
330 	cookie->id_flags &= ~_BUS_DMA_IS_BOUNCING;
331 	cookie->id_buftype = _BUS_DMA_BUFTYPE_INVALID;
346 	struct mips_bus_dma_cookie *cookie = map->_dm_cookie;
368 	if ((cookie->id_flags & _BUS_DMA_IS_BOUNCING) == 0) {
385 	switch (cookie->id_buftype) {
395 			memcpy((char *)cookie->id_bouncebuf + offset,
396 			    (char *)cookie->id_origbuf + offset, len);
404 			memcpy((char *)cookie->id_origbuf + offset,
405 			    (char *)cookie->id_bouncebuf + offset, len);
415 		struct mbuf *m, *m0 = cookie->id_origbuf;
427 			    (char *)cookie->id_bouncebuf + offset);
451 				    (char *)cookie->id_bouncebuf + offset,
479 		printf("unknown buffer type %d\n", cookie->id_buftype);
488 		mips_dcache_wbinv_range((vaddr_t)cookie->id_bouncebuf + offset,
519 	struct mips_bus_dma_cookie *cookie = map->_dm_cookie;
522 	cookie->id_bouncebuflen = round_page(size);
523 	error = isadma_bounce_dmamem_alloc(t, cookie->id_bouncebuflen,
524 	    PAGE_SIZE, map->_dm_boundary, cookie->id_bouncesegs,
525 	    map->_dm_segcnt, &cookie->id_nbouncesegs, flags);
528 	error = _bus_dmamem_map(t, cookie->id_bouncesegs,
529 	    cookie->id_nbouncesegs, cookie->id_bouncebuflen,
530 	    (void **)&cookie->id_bouncebuf, flags);
534 		_bus_dmamem_free(t, cookie->id_bouncesegs,
535 		    cookie->id_nbouncesegs);
536 		cookie->id_bouncebuflen = 0;
537 		cookie->id_nbouncesegs = 0;
539 		cookie->id_flags |= _BUS_DMA_HAS_BOUNCE;
547 	struct mips_bus_dma_cookie *cookie = map->_dm_cookie;
549 	_bus_dmamem_unmap(t, cookie->id_bouncebuf,
550 	    cookie->id_bouncebuflen);
551 	_bus_dmamem_free(t, cookie->id_bouncesegs,
552 	    cookie->id_nbouncesegs);
553 	cookie->id_bouncebuflen = 0;
554 	cookie->id_nbouncesegs = 0;
555 	cookie->id_flags &= ~_BUS_DMA_HAS_BOUNCE;