RELENG_7 DVD drive access in AHCI/SATA mode

[Aryeh M. Friedman]

Sean Farley wrote:
> I have recently assembled a new system with a SATA DVD drive.
> Unfortunately, it seems to not be supported FreeBSD 7:
>
> ata7: <ATA channel 5> on atapci0
> ata7: SATA ATAPI devices not supported yet
> ata7: [ITHREAD]

This is (semi-) fixed in 8-Current (reports sata/300 as sata/150 on
actual storage devices)
>
>
> I am using software (BIOS) RAID on a P5K-E/WiFi (Intel P35 chipset)
> board.  Sadly, the option to manually configure the DVD drive is only
> available when in IDE mode.

P35's in general have some issues.   For example I am still totally
unable to see my PATA drives if I have SATA drive(s) installed.
>
> In the interim, is it possible to force the drive to IDE (really UDMA)
> mode?  I tried a few attempts at the kernel source to force it to UDMA33
> at the point of the warning in ata-chipset.c, but these resulted in
> panics.

I have an old 7 patch if you want it.