Re: [PATCH V4 0/6] Add panic support for all DCE/DCN

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On 09/12/2024 22:51, Harry Wentland wrote:
Looks good now.

Series is
Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx>

Haven't followed the whole panic support closely. Is there a
way to trigger a panic for testing, or is there any other
recommended way to test this?

The easiest way is to trigger a kernel panic with:
echo c > /proc/sysrq-trigger

You can also enable CONFIG_DRM_PANIC_DEBUG and echo 1 > /sys/kernel/debug/dri/0/drm_panic_plane_0

But as it overwrite ones of the two framebuffer, it causes flickers, and a few graphic artefacts, but make it somewhat easier to test, as it doesn't crash the machine.

Best regards,

--

Jocelyn





Harry

On 2024-12-09 12:00, Alex Deucher wrote:
+ Harry

Ping on this series.

On Tue, Nov 12, 2024 at 4:37 PM Alex Deucher <alexander.deucher@xxxxxxx> wrote:

This builds on the patches from Lu and Jocelyn to fill in
panic support for all DCE/DCN variants and code pathes.

v2: refactor to provide cleaner history and share more
code to provide a more consistent experience across
DC and non-DC.

v3: resend with the missing first patch

v4: move hubp and mi code into a dc helper function

Alex Deucher (5):
   drm/amdgpu: add generic display panic helper code
   drm/amd/display: add clear_tiling hubp callbacks
   drm/amd/display: add clear_tiling mi callbacks
   drm/amd/display/dc: add helper for panic updates
   drm/amd/display: add non-DC drm_panic support

Jocelyn Falempe (1):
   drm/amd/display: add DC drm_panic support

  drivers/gpu/drm/amd/amdgpu/amdgpu_display.c   | 80 +++++++++++++++++++
  drivers/gpu/drm/amd/amdgpu/amdgpu_display.h   |  5 ++
  drivers/gpu/drm/amd/amdgpu/dce_v10_0.c        | 27 +++++++
  drivers/gpu/drm/amd/amdgpu/dce_v11_0.c        | 27 +++++++
  drivers/gpu/drm/amd/amdgpu/dce_v6_0.c         | 27 +++++++
  drivers/gpu/drm/amd/amdgpu/dce_v8_0.c         | 26 ++++++
  .../amd/display/amdgpu_dm/amdgpu_dm_plane.c   | 30 ++++++-
  .../gpu/drm/amd/display/dc/core/dc_surface.c  | 46 +++++++++++
  drivers/gpu/drm/amd/display/dc/dc_plane.h     |  3 +
  .../drm/amd/display/dc/dce/dce_mem_input.c    | 34 ++++++--
  .../amd/display/dc/hubp/dcn10/dcn10_hubp.c    | 15 ++++
  .../amd/display/dc/hubp/dcn10/dcn10_hubp.h    |  2 +
  .../amd/display/dc/hubp/dcn20/dcn20_hubp.c    | 15 ++++
  .../amd/display/dc/hubp/dcn20/dcn20_hubp.h    |  2 +
  .../amd/display/dc/hubp/dcn201/dcn201_hubp.c  |  1 +
  .../amd/display/dc/hubp/dcn21/dcn21_hubp.c    |  1 +
  .../amd/display/dc/hubp/dcn30/dcn30_hubp.c    | 17 ++++
  .../amd/display/dc/hubp/dcn30/dcn30_hubp.h    |  2 +
  .../amd/display/dc/hubp/dcn31/dcn31_hubp.c    |  1 +
  .../amd/display/dc/hubp/dcn32/dcn32_hubp.c    |  3 +-
  .../amd/display/dc/hubp/dcn35/dcn35_hubp.c    |  1 +
  .../amd/display/dc/hubp/dcn401/dcn401_hubp.c  | 15 +++-
  .../amd/display/dc/hubp/dcn401/dcn401_hubp.h  |  2 +
  drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h  |  1 +
  .../gpu/drm/amd/display/dc/inc/hw/mem_input.h |  2 +
  25 files changed, 377 insertions(+), 8 deletions(-)

--
2.47.0






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