[PATCH v3 0/2] drm/nouveau: Add drm_panic support for nv50+

[Jocelyn Falempe]

On 13/09/2024 09:03, Jocelyn Falempe wrote:
> This series adds basic drm_panic support for nouveau.
> Patches 1 Add ABGR2101010 support in drm_panic.
> Patch 2 registers nouveau to drm_panic, and handle tiling.
> I've tested on a GTX1650 (Turing) and GF 8800 GT (Tesla), while
> running Gnome/Wayland desktop, and in VT.

I got a test report, that it also works correctly on a GT1030 (Pascal).
So I'm confident it works also on earlier GPUs.

Best regards,

-- 

Jocelyn

> 
> It should work on other nv50+ cards, but I didn't test them.
> 
> To test it, you need to build your kernel with CONFIG_DRM_PANIC=y, and run:
> 
> echo c > /proc/sysrq-trigger
> 
> or you can enable CONFIG_DRM_PANIC_DEBUG and run:
> 
> echo 1 > /sys/kernel/debug/dri/0/drm_panic_plane_0
> 
> v2:
>   * Rebase and drop already merged patches.
>   * Rework the tiling algorithm, using "swizzle" to compute the offset
>     inside the block.
>     
> v3:
>   * Fix support for Tesla GPU, which have simpler tiling.
>   * Drop "add a private pointer to struct drm_scanout_buffer".
>   * Use nouveau_framebuffer_get_layout() to get the tiling parameters.
>   * Have 2 set_pixel() functions, depending on GPU family.
>   
> Jocelyn Falempe (2):
>    drm/panic: Add ABGR2101010 support
>    drm/nouveau: Add drm_panic support for nv50+
> 
>   drivers/gpu/drm/drm_panic.c             |  10 ++
>   drivers/gpu/drm/nouveau/dispnv50/wndw.c | 139 +++++++++++++++++++++++-
>   2 files changed, 147 insertions(+), 2 deletions(-)
> 
> 
> base-commit: 9d443deb0441b9dbb22a9aac3b471da05220df1b