[Nouveau] [BUG][NOUVEAU] G70 broken since 5.10-rc1

[Christian König]

Hi do you have a full dmesg? This is a bit short.

Going to take a look later today.

Thanks,
Christian.

Am 25.11.20 um 23:16 schrieb Mark Hounschell:
>
> I'm running an older "NVIDIA Corporation G70 [GeForce 7800 GT] (rev 
> a1)" card in a newer BIOSTAR B550GTA MB. Kernel 5.10-rcx does not 
> work. I get no virtual consoles or X screen.
>
>
> My dmesg seems to show the cause:
>
> [    5.825702] fb0: switching to nouveaufb from VESA VGA
> [    6.242991] nouveau 0000:14:00.0: vgaarb: deactivate vga console
> [    6.243066] nouveau 0000:14:00.0: NVIDIA G70 (047200a1)
> [    6.443671] nouveau 0000:14:00.0: bios: version 05.70.02.13.7b
> [    6.443948] nouveau 0000:14:00.0: fb: 256 MiB GDDR3
> [    6.498039] nouveau 0000:14:00.0: DRM: VRAM: 250 MiB
> [    6.498041] nouveau 0000:14:00.0: DRM: GART: 512 MiB
> [    6.498044] nouveau 0000:14:00.0: DRM: TMDS table version 1.1
> [    6.498046] nouveau 0000:14:00.0: DRM: DCB version 3.0
> [    6.498049] nouveau 0000:14:00.0: DRM: DCB outp 00: 01000300 00000028
> [    6.498051] nouveau 0000:14:00.0: DRM: DCB outp 01: 03000302 00000000
> [    6.498053] nouveau 0000:14:00.0: DRM: DCB outp 02: 04011310 00000028
> [    6.498055] nouveau 0000:14:00.0: DRM: DCB outp 03: 04011312 00000000
> [    6.498057] nouveau 0000:14:00.0: DRM: DCB outp 04: 020223f1 0040c080
> [    6.498060] nouveau 0000:14:00.0: DRM: DCB conn 00: 1030
> [    6.498062] nouveau 0000:14:00.0: DRM: DCB conn 01: 2130
> [    6.498064] nouveau 0000:14:00.0: DRM: DCB conn 02: 0210
> [    6.498065] nouveau 0000:14:00.0: DRM: DCB conn 03: 0211
> [    6.498067] nouveau 0000:14:00.0: DRM: DCB conn 04: 0213
> [    6.502949] nouveau 0000:14:00.0: DRM: Setting dpms mode 3 on TV 
> encoder (output 4)
> [    6.585845] nouveau 0000:14:00.0: DRM: failed to map fb: -28
> [    6.585949] [drm] Initialized nouveau 1.3.1 20120801 for 
> 0000:14:00.0 on minor 0
>
> This commit caused the BUG
>
> 141b15e59175aa174ca1f7596188bd15a7ca17ba is the first bad commit
> commit 141b15e59175aa174ca1f7596188bd15a7ca17ba
> Author: Christian König <christian.koenig at amd.com>
> Date:   Fri Aug 21 16:06:50 2020 +0200
>
>     drm/nouveau: move io_reserve_lru handling into the driver v5
>
>     While working on TTM cleanups I've found that the io_reserve_lru 
> used by
>     Nouveau is actually not working at all.
>
>     In general we should remove driver specific handling from the memory
>     management, so this patch moves the io_reserve_lru handling into 
> Nouveau
>     instead.
>
>     v2: don't call ttm_bo_unmap_virtual in nouveau_ttm_io_mem_reserve
>     v3: rebased and use both base and offset in the check
>     v4: fix small typos and test the patch
>     v5: rebased and keep the mem.bus init in TTM.
>
>     Signed-off-by: Christian König <christian.koenig at amd.com>
>     Acked-by: Daniel Vetter <daniel.vetter at ffwll.ch>
>     Reviewed-by: Ben Skeggs <bskeggs at redhat.com>
>     Link: 
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatchwork.freedesktop.org%2Fpatch%2F388643%2F&data=04%7C01%7Cchristian.koenig%40amd.com%7C03438c404c6144472f9b08d8918fb87e%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637419393771591426%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=bsapJBDZ9FyWSH%2Fos1jxXcmxgJy%2FmF%2FiFNzWQ3X1wAs%3D&reserved=0
>
>  drivers/gpu/drm/nouveau/nouveau_bo.c  | 101 
> +++++++++++++++++++++++++++-------
>  drivers/gpu/drm/nouveau/nouveau_bo.h  |   3 +
>  drivers/gpu/drm/nouveau/nouveau_drv.h |   2 +
>  drivers/gpu/drm/nouveau/nouveau_ttm.c |  44 ++++++++++++++-
>  4 files changed, 127 insertions(+), 23 deletions(-)
>
>