arm/arm/busdma_machdep-v6.c

443 	bus_dma_tag_t newtag;
458 	newtag = (bus_dma_tag_t)malloc(sizeof(*newtag), M_BUSDMA,
460 	if (newtag == NULL) {
462 		    __func__, newtag, 0, error);
466 	newtag->parent = parent;
467 	newtag->alignment = alignment;
468 	newtag->boundary = boundary;
469 	newtag->lowaddr = trunc_page((vm_paddr_t)lowaddr) + (PAGE_SIZE - 1);
470 	newtag->highaddr = trunc_page((vm_paddr_t)highaddr) +
472 	newtag->filter = filter;
473 	newtag->filterarg = filterarg;
474 	newtag->maxsize = maxsize;
475 	newtag->nsegments = nsegments;
476 	newtag->maxsegsz = maxsegsz;
477 	newtag->flags = flags;
478 	newtag->ref_count = 1; /* Count ourself */
479 	newtag->map_count = 0;
481 		newtag->lockfunc = lockfunc;
482 		newtag->lockfuncarg = lockfuncarg;
484 		newtag->lockfunc = dflt_lock;
485 		newtag->lockfuncarg = NULL;
490 		newtag->lowaddr = MIN(parent->lowaddr, newtag->lowaddr);
491 		newtag->highaddr = MAX(parent->highaddr, newtag->highaddr);
492 		newtag->alignment = MAX(parent->alignment, newtag->alignment);
493 		newtag->flags |= parent->flags & BUS_DMA_COULD_BOUNCE;
494 		if (newtag->boundary == 0)
495 			newtag->boundary = parent->boundary;
497 			newtag->boundary = MIN(parent->boundary,
498 					       newtag->boundary);
499 		if (newtag->filter == NULL) {
504 			newtag->filter = parent->filter;
505 			newtag->filterarg = parent->filterarg;
506 			newtag->parent = parent->parent;
508 		if (newtag->parent != NULL)
512 	if (exclusion_bounce_check(newtag->lowaddr, newtag->highaddr))
513 		newtag->flags |= BUS_DMA_EXCL_BOUNCE;
514 	if (alignment_bounce(newtag, 1))
515 		newtag->flags |= BUS_DMA_ALIGN_BOUNCE;
531 		if ((error = alloc_bounce_zone(newtag)) != 0) {
532 			free(newtag, M_BUSDMA);
535 		bz = newtag->bounce_zone;
543 			if (alloc_bounce_pages(newtag, pages) < pages)
547 		newtag->flags |= BUS_DMA_MIN_ALLOC_COMP;
549 		newtag->bounce_zone = NULL;
552 		free(newtag, M_BUSDMA);
555 		*dmat = newtag;
558 	    __func__, newtag, (newtag != NULL ? newtag->flags : 0), error);