Re: updates for designware pci-host

[Ben Dooks]

On 27/07/2022 13:56, Peter Maydell wrote:
> On Wed, 27 Jul 2022 at 12:15, Ben Dooks <qemu@ben.fluff.org> wrote:
> > On Wed, Jul 13, 2022 at 05:54:42PM +0100, Ben Dooks wrote:
> > > As part of a project we have been looking at using the DesignWare
> > > PCIe host. We found a few issues of missing features or small bugs
> > > when using this with a recent Linux kernel (v5.17.x)
> > >
> > > Whilst doing this we also made a start on some tracing events.
> >
> > Hi, has anyone had a chance to review these. If so can this series
> > get applied? If not should anyone else be added to the review list?
> >
> > If it would be easier I can try and find a git tree to publish this
> > branch on if a pull request would be easier.
>
> Is there a public spec for the hardware? There isn't anything
> listed in the source file in the tree. Without the h/w specs
> it's pretty difficult to review changes.

Some of this I did against the Linux driver from the v5.17 kernel
which didn't work until these fixes were added (not sure when the
Linux kernel got the ATU size autodetection in, etc).

I think everything described in this set was from Linux, but I
do have access to the Synopsys v5 PCIe core documentation so have
not gone to see if there is anything publicly available.

--
Ben