x86/x86/busdma_bounce.c

480 	bus_size_t sgsize;
489 			sgsize = MIN(buflen, dmat->common.maxsegsz);
491 				sgsize = MIN(sgsize,
495 			curaddr += sgsize;
496 			buflen -= sgsize;
616     bus_size_t sgsize, bus_dma_segment_t *segs, int *segp)
627 		if (sgsize > (baddr - curaddr))
628 			sgsize = (baddr - curaddr);
639 		segs[seg].ds_len = sgsize;
642 		    (segs[seg].ds_len + sgsize) <= dmat->common.maxsegsz &&
645 			segs[seg].ds_len += sgsize;
650 			segs[seg].ds_len = sgsize;
654 	return (sgsize);
666 	bus_size_t sgsize;
687 		sgsize = MIN(buflen, dmat->common.maxsegsz);
691 			sgsize = MIN(sgsize, PAGE_SIZE - (curaddr & PAGE_MASK));
693 			    sgsize);
695 		sgsize = _bus_dmamap_addseg(dmat, map, curaddr, sgsize, segs,
697 		if (sgsize == 0)
699 		buf += sgsize;
700 		buflen -= sgsize;
718 	bus_size_t sgsize, max_sgsize;
755 		sgsize = PAGE_SIZE - (curaddr & PAGE_MASK);
759 			sgsize = roundup2(sgsize, dmat->common.alignment);
760 			sgsize = MIN(sgsize, max_sgsize);
762 			    sgsize);
764 			sgsize = MIN(sgsize, max_sgsize);
766 		sgsize = _bus_dmamap_addseg(dmat, map, curaddr, sgsize, segs,
768 		if (sgsize == 0)
770 		vaddr += sgsize;
771 		buflen -= sgsize;
787 	bus_size_t sgsize, max_sgsize;
822 		sgsize = PAGE_SIZE - ma_offs;
826 			sgsize = roundup2(sgsize, dmat->common.alignment);
827 			sgsize = MIN(sgsize, max_sgsize);
828 			KASSERT((sgsize & (dmat->common.alignment - 1)) == 0,
834 			if ((ma_offs + sgsize) > PAGE_SIZE)
840 			    next_paddr, sgsize);
842 			sgsize = MIN(sgsize, max_sgsize);
844 		sgsize = _bus_dmamap_addseg(dmat, map, paddr, sgsize, segs,
846 		if (sgsize == 0)
848 		KASSERT(buflen >= sgsize,
850 		buflen -= sgsize;
851 		if (((ma_offs + sgsize) & ~PAGE_MASK) != 0)
853 		ma_offs = (ma_offs + sgsize) & PAGE_MASK;