$ dmesg |grep DMA
ata1: SATA max UDMA/133 cmd 0xFE00 ctl 0xFE12 bmdma 0xFEA0 irq 201
ata2: SATA max UDMA/133 cmd 0xFE20 ctl 0xFE32 bmdma 0xFEA8 irq 201
ata1: dev 0 ATA-6, max UDMA/100, 78125000 sectors: LBA48
ata1: dev 0 configured for UDMA/100
    ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio
hda: ATAPI 52X DVD-ROM CD-R/RW drive, 1536kB Cache, UDMA(33)