[OT] bus speed for ata dvd-rw drive

[Alan Cox]

On Tue, Oct 17, 2006 at 10:01:29PM +0200, Gianluca Cecchi wrote:
> kernel: JMB363: chipset revision 2
> kernel: JMB363: 100% native mode on irq 177
> kernel:     ide2: BM-DMA at 0xb400-0xb407, BIOS settings: hde:pio, hdf:pio
> kernel:     ide3: BM-DMA at 0xb408-0xb40f, BIOS settings: hdg:pio, hdh:pio
> kernel: hde: ATAPI DVD DUAL 8X4X12, ATAPI CD/DVD-ROM drive
> kernel: ide2 at 0xbc00-0xbc07,0xb882 on irq 177
> 
> Does it makes sense to override with idebus directive if I only have
> an ide DVD-RW device connected?

For some reason your BIOS appears to have decided the DVD should be in PIO
mode and we respect that. Make sure the JMB36x boot rom is enabled and if
its in the main BIOS that IDE bus mastering is BIOS selected.

Failing that let me know what hdparm -d1 /dev/hde does