ATA_NR_MWDMA_MODES 337 include/linux/libata.h ATA_SHIFT_UDMA = ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES, ATA_NR_MWDMA_MODES 472 include/linux/libata.h ATA_MASK_MWDMA = ((1LU << ATA_NR_MWDMA_MODES) - 1)