- /* See if we have MWDMA or UDMA data. We don't bother with MWDMA
- if UDMA is availabe as this means the BIOS set UDMA and our
- error changedown if it works is UDMA to PIO anyway */
- if (probe.flags & (1 << (2 * unit))) {
- /* MWDMA */
- for (i = 0; i < 5; i++) {
- t = probe.drive[unit].dma;
- if (t <= mwdma_cycle[i]) {
- mask |= (2 << (ATA_SHIFT_MWDMA + i)) - 1;
- break;
- }
- }
- } else {
- /* UDMA */
- for (i = 0; i < 7; i++) {
- t = probe.drive[unit].dma;
- if (t <= udma_cycle[i]) {
- mask |= (2 << (ATA_SHIFT_UDMA + i)) - 1;
- break;
- }
- }
- }
- if (mask & (0xF8 << ATA_SHIFT_UDMA))