[Nouveau] GM206 support?

[Andy Lutomirski]

On Wed, Mar 18, 2015 at 3:25 AM, Stefan Huehner <stefan at huehner.org> wrote:
> On Tue, Mar 17, 2015 at 06:59:25PM -0400, Ilia Mirkin wrote:
>> On Tue, Mar 17, 2015 at 6:40 PM, Andy Lutomirski <luto at amacapital.net> wrote:
>> > On Tue, Mar 17, 2015 at 2:57 PM, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
>> >> On Tue, Mar 17, 2015 at 5:52 PM, Andy Lutomirski <luto at amacapital.net> wrote:
>> >>> On Fri, Feb 13, 2015 at 9:52 PM, Ilia Mirkin <imirkin at alum.mit.edu> wrote:
>> >>>> On Fri, Feb 13, 2015 at 8:59 PM, Andy Lutomirski <luto at amacapital.net> wrote:
>> >>>>> My new GTX 960 (GM206, I think) says:
>> >>>>>
>> >>>>> [   10.329351] nouveau ![  DEVICE][0000:09:00.0] unknown Maxwell chipset
>> >>>>> [   10.329355] nouveau E[  DEVICE][0000:09:00.0] unknown chipset, 0x126010a1
>> >>>>> [   10.329356] nouveau E[     DRM] failed to create 0x00000080, -22
>> >>>>> [   10.330129] nouveau: probe of 0000:09:00.0 failed with error -22
>> >>>>>
>> >>>>> Hacking up nouveau so that it treats it like a GM204 doesn't work.
>> >>>>
>> >>>> What happens if you just drop the 0x126 next to the 0x124 in
>> >>>> engine/device/gm100.c ?
>> >>>>
>> >>>>> Are there any near-term plans to support this card?
>> >>>>
>> >>>> I don't know of anyone with the hw... maybe Ben got one? If you're
>> >>>> interested in helping, the kernel logs from the above experiment + an
>> >>>> mmiotrace of the blob drivers (see
>> >>>> https://wiki.ubuntu.com/X/MMIOTracing) + vbios (see
>> >>>> http://nouveau.freedesktop.org/wiki/DumpingVideoBios/).
>> >>>>
>> >>>> I assume you're on a recent kernel? You need 3.19 for the GM204 stuff
>> >>>> to work in the first place.
>> >>>
>> >>> Neither 3.19 nor 4.0-rcsomething works.
>> >>>
>> >>> I put an mmio trace (X startup and glxgears) and a vbios dump here:
>> >>>
>> >>> http://web.mit.edu/luto/www/GM206/
>> >>
>> >> Stefan sent proper patches to get nouveau going on his GM206, which
>> >> will make it into the next 4.0-rc. Here is a tree that is destined
>> >> towards drm-fixes:
>> >>
>> >> http://cgit.freedesktop.org/nouveau/linux-2.6/log/?h=linux-4.0
>> >>
>> >> Let us know if it makes the card work. (Definitely no acceleration
>> >> without signed firmware for now though.)
>> >
>> > The driver loads and seems to work.
>>
>> Excellent!
>>
>> > The nouveau X driver doesn't load, though.
>>
>> Yeah, xf86-video-nouveau has no support for the GM20x family? Note
>> that even if it did load, you wouldn't get any acceleration -- may as
>> well just use the 'xf86-video-modesetting' driver.
>>
>
> Hi guys,
> i did sent a patch to add GM206 to the ddx also but looks like it got missed you can find it here.
>
> http://lists.freedesktop.org/archives/nouveau/2015-February/020144.html
>
> But as said no acceleration yet.

I'll probably stick with the binary driver until there's acceleration.
I have too many pixels on my monitor for reasonable unaccelerated
compositing performance, I think.

Thanks for bringing this up, though!  Working modesetting is a *huge*
improvement over vesafb.

--Andy