[BUGS] New AMD motherboard not recognised by ATA driver?

[Andrew Reilly]

Hi again,

I would like to report a happy resolution to my conundrum that
might be of help to others:

The important thing was to turn on AHCI in the bios and put
ahci_enable="YES"
in /boot/loader.conf

Now the SSD reports that it is running as SATA-3 at 600MB/s and
the other pair of hard drives are SATA-2 at 300MB/s, same as the
ones on the SiiS controller.

On Fri, May 18, 2012 at 07:05:07PM +1000, Andrew Reilly wrote:
> Hi all,
> 
> Figured I'd ask locally before raising a PR or troubling the
> dennizens of the fs mailing lists...
> 
> My home server (intel i3 Mini-ITX) died fairly catastrophically
> the other day: wouldn't even boot to BIOS, so I figured the CPU
> had probably died somehow.  Replaced it with a new and seemingly
> similarly capable AMD system with an A75M chipset.  The problem
> is that the ATA driver (atapci) seems to be falling back to
> UDMA2 33MB/s mode, which is disappointing to say the least.  I
> have two Seagate NS series drives and a Corsair SSD drive on
> those sata ports, and two identical ones on a cheapo SiiS PCI-e
> card, and the latter claim to be capable of 300MB/s using UDMA6,
> which is more like it.
> 
> I've tried the following lines in /boot/loader.conf, to no
> effect:
> 
[blah]
> 
> Is this just one of those things that I can configure with some
> magic setting that I haven't found yet, or might I have to find an
> vendor/model ID in a verbose boot log and patch a table in the
> driver, or have I just made an unwise purchase decision, with no
> hope until someone with a clue writes a new device driver?

Cheers,

-- 
Andrew