support of PCIe NVME drives

[Chris]

On Thu, 16 Apr 2020 22:57:10 +0200 Miroslav Lachman 000.fbsd at quip.cz said

> Chuck Tuffli wrote on 04/16/2020 22:29:
> > On Thu, Apr 16, 2020 at 12:30 PM Miroslav Lachman <000.fbsd at quip.cz> wrote:
> >>
> >> Pete Wright wrote on 04/16/2020 20:23:
> >>>
> >>>
> >>> On 4/16/20 11:12 AM, Miroslav Lachman wrote:
> >>>> Kurt Jaeger wrote on 04/16/2020 20:07:
> >>
> >>> I would try booting via UEFI if you can.  I just installed a laptop
> >>> yesterday which has a nvme root device, it was detected by the 12-STABLE
> >>> snapshot I used to boot from.  no other modifications were necessary on
> >>> my end.
> >>
> >> I changed BIOS settings to use UEFI boot method, booted 12.1 installer
> >> ISO but without luck. Still no NVME disks :(
> >>
> >> You can see it on printscreen from iDRAC https://ibb.co/tPnymL7
> >>
> >> Anything more I can test?
> > 
> > Fair warning, I don't deal much with Dell, but it's curious that iDrac
> > lists the device protocol as MI
> >> Device Protocol:      NVMe-MI1.0
> > 
> > MI or the Management Interface is defined by NVMe, but it isn't the
> > same as a block interface. MI typically uses SMBUS and not PCIe to
> > communicate with the device. So it's possible that the device is
> > visible to iDrac via SMBUS but may not be on the PCIe bus for
> > $reasons. Does iDrac have any tools to interact with the device via
> > MI?
> 
> iDRAC does not allow me to do anything with the drives.
> But I booted Linux SystemRescueCd and nvme devices are there visible in 
> /dev/
> printscreen https://ibb.co/sj22Nwg
> 
> So I think the HW is OK, but FreeBSD does not recognize the controller?

Does mps(4) or any of the other (often Dell) rebranded LSI drivers expose anything?

> 
> Kind regards
> Miroslav Lachman

--Chris