FDC_MAXIOSIZE
nblks = uimin(nblks, FDC_MAXIOSIZE / FDC_BSIZE);
nblks = uimin(nblks, FDC_MAXIOSIZE / FDC_BSIZE);
nblks = uimin(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd));
nblks = uimin(nblks, FDC_MAXIOSIZE / FD_BSIZE(fd));
nblks = uimin(nblks, FDC_MAXIOSIZE / FDC_BSIZE);
nblks = uimin(nblks, FDC_MAXIOSIZE / FDC_BSIZE);
if (bus_dmamap_create(fdc->sc_dmat, FDC_MAXIOSIZE, 1, DMAC_MAXSEGSZ,