[Nouveau] GP10B regression

[Mikko Perttunen]

Bisection status report:

The latest commit I have gotten to work is

10842ba074e9 drm/nouveau: remove unused nouveau_fence_work()

i.e. the first bad commit is

d7722134b825 drm/nouveau: switch over to new memory and vmm interfaces

Even with the first one some patches/hacks are needed:

- in mmu/gp10b.c, in the constructor we need to select the GM200 path - 
the GP100 path seems to not to work

- as mentioned in the first mail, we need to set .mmu = gp10b_mmu_new,

- and in nouveau_mem_memory_target we need to return 
NVKM_MEM_TARGET_NCOH instead of NVKM_MEM_TARGET_HOST.

Cheers,
Mikko

On 11/10/2017 11:27 PM, Mikko Perttunen wrote:
> Hello everyone,
> 
> it seems that GP10B support has regressed recently. With linux-next, I 
> need to modify device/base.c to set
> 
>      .mmu = gp10b_mmu_new
> 
> for GP10B (makes sense - I guess this was left as gf100_mmu_new as a 
> typo) to probe. After that, running a trivial testcase (running a NOP 
> method in 3D class) fails with
> 
> [  110.084649] nouveau 17000000.gpu: fifo: read fault at 0000011000 
> engine 06 [HOST0] client 06 [GPC0/L1_2] reas|
> on 02 [PTE] on channel 1 [00f206a000 nouveau_noop_te[2413]] 
>                                         |
> [  110.101423] nouveau 17000000.gpu: fifo: channel 1: killed 
>                                         |
> [  110.106827] nouveau 17000000.gpu: fifo: runlist 0: scheduled for 
> recovery                                    |
> Submitted pushbuffer.                                        |
> [  110.113867] nouveau 17000000.gpu: nouveau_noop_te[2413]: channel 1 
> killed!                                   |
> [  125.084858] nouveau 17000000.gpu: nouveau_noop_te[2413]: failed to 
> idle channel 1 [nouveau_noop_te[2413]]
> 
> I haven't managed to track this down yet. However, I did find out that 
> checking out the drm/nouveau directory at commit "drm/nouveau/kms/nv50: 
> use the correct state for base channel notifier setup" makes things work 
> again.
> 
> I'll continue to take look, though bisecting is a bit harder than usual 
> due to some other issues in Tegra186 recently, so any pointers in the 
> right direction would be useful :)
> 
> Thanks,
> Mikko
> _______________________________________________
> Nouveau mailing list
> Nouveau at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/nouveau