Re: PCIe with Designware RC.

[BALATON Zoltan]

On Sun, 24 Dec 2023, Shlomo Pongratz wrote:
> Thank you, see comment inside.
>
> On Sun, Dec 24, 2023 at 1:11 PM BALATON Zoltan <balaton@eik.bme.hu> wrote:
> > On Sun, 24 Dec 2023, Shlomo Pongratz wrote:
> > > Hi,
> > > I'm working on a AARCH64 project that uses the designeware
> > > (hw/pci-host/designware.c).
> > > I've copied the designware initialization from hw/arm/fsl-imx7.c and I
> > > hope I've updated the dtsi correctly.
> > > After fixing an issue with the iATU windows (see patch
> > > https://lists.gnu.org/archive/html/qemu-devel/2023-12/msg02643.html)
> > > I've tried to add virtualized NVMe controller.
> > > When I added the lines:
> > >        -device nvme,serial=deadbeef,drive=nvme0,bus=pcie \  (Or without bus=)
> > >        -drive file=/home/pliops/disk-1.img,if=none,id=nvme1 \
> >
> > You define drive with if=none,id=nvme1 but have drive=nvme0 in your
> > device. You should refer to the drive you want the device to use so I
> > think it should either be -device nvme,drive=nvme1 or the if of drive
> > should be nvme0.
>
> This was a typo, All are nvme0.

Then maybe you need to give more details on what do you use as then the 
difference is only which pcie bus it's connected to. You could try 
checking in QEMU monitor with 'info qtree' where devices are attached and 
how are they organised and with 'info mtree' where BARs are mapped.

Regards,
BALATON Zoltan