[Openpvrsgx-devgroup] [PATCH] staging: pvr: Add a simplified pvr-drv.c as replacement for messy pvr_drm.c

Tony Lindgren tony at atomide.com
Sat Nov 9 17:25:50 CET 2019

* Merlijn Wajer <merlijn at wizzup.org> [191109 00:12]:
> Hi, (CC parazyd for the deb pkg info)
> On 09/11/2019 09:07, H. Nikolaus Schaller wrote:
> > Hi Tony,
> >> Yeah we should be able to drop that too. And anything
> >> else related to a typical Linux driver.
> >>
> >> BTW, I still have had no luck with seeing the demos working..
> >>
> >> Trying with am335x or am437x (after patching it) I get
> >> these kind of errors when trying to run the demos after
> >> running pvrsrvctl --start --no-module:
> >>
> >> libEGL warning: DRI2: xcb_connect failed
> >> ...
> >>
> >> Any idea what I might be missing?
> > 
> > Well, there is something wrong with X11 (xcb) user space (I use Debian Stretch 9.9). I have to uninstall it.
> > 
> > According to my analyses the problem is libx11-xcb1 which becomes installed by either of
> > libegl1-mesa
> > libegl1-mesa-drivers
> > libwayland-egl1-mesa
> > and they also seem to depend on each other so that you can't easily uninstall one of them.
> > 
> > So it is a little difficult to get rid of this flu :)
> Something like this might help:
> https://github.com/maemo-leste/ti-omap3-sgx/blob/master/debian/control
> By specifying all the conflicts in this way, you will force the mesa
> packages to be uninstalled. It took us a while to get this right for
> Devuan Ascii (Debian Stretch).
> I'm not sure how easily you can use this file directly, but just wanted
> to quickly indicate we've been through this and (I think) solved this
> problem. We could potentially host more of these packages in the Leste
> repo (some pvr component), if you'd like.

Well so I did this manually:

# apt-get remove libegl1-mesa libegl1-mesa-drivers libwayland-egl1-mesa

And that got rid of the xcb_connect errors thanks.

Then additionally omapdrm or tilcd needs to be enabled and
looks like it needs to be done in the right order so the
/dev/dri instances are 0 and 1, and not 0 and 2 or 1 and 2
if modules are removed and probed multiple times.. What a
flakey pile

Now I get this trying to run the gles1test1 on am437x-sk-evm
after patching it to probe:

PVR_K: UM DDK-(3699939) and KM DDK-(3699939) match. [ OK ]
PVR:(Error): PVRPMapKMem: mmap(2) failed: Mapping handle=0xf: Tc [0, ]
PVR:(Error): LoadOGLES2AndGetFunctions: Wrong version. Got: 2, Expected 3 [0, ]
'eglCreateContext' returned egl error 'EGL_NOT_INITIALIZED' (0x3001)

And I guess these related to this in dmesg:

PVR_K:(Error): DoMapToUser: Error - vmf_insert_mixed failed (100)



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