On Sun, 10 Jun 2001, Stephen Mollett wrote: > Greetings, > > When using ATAPI devices on a Promise Ultra100 (PDC20267), DMA is not > enabled. Is this a bug in the pdc202xx driver or a limitation of the chipset? > > eg. > With the drive attached to a VIA 82C686: > hdb: ATAPI 40X CD-ROM CD-R/RW drive, 8192kB Cache, UDMA(25) > > With the drive attached to an Ultra100: > hde: ATAPI 40X CD-ROM CD-R/RW drive, 8192kB Cache > > I have also tested this with a DVD-ROM and an LS-120 drive. Hard disks are > fine, however. > > Regards, > Stephen Mollett > Stephen, I can make it do DMA ATAPI, however I have to add the code that used the second DMA engine space. Andre Hedrick ASL Kernel Development Linux ATA Development ----------------------------------------------------------------------------- ASL, Inc. Toll free: 1-877-ASL-3535 1757 Houret Court Fax: 1-408-941-2071 Milpitas, CA 95035 Web: www.aslab.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
