drm/amd: Add per-ring reset for vcn v4.0.5 use

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There is a problem occurring on VCN 4.0.5 where in some situations a job
is timing out.  This triggers a job timeout which then causes a GPU
reset for recovery.  That has exposed a number of issues with GPU reset
that have since been fixed. But also a GPU reset isn't actually needed
for this circumstance. Just restarting the ring is enough.

Add a reset callback for the ring which will stop and start VCN if the
issue happens.

Link: https://gitlab.freedesktop.org/mesa/mesa/-/issues/12528
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3909
Link: https://lore.kernel.org/r/20250506204948.12048-2-mario.limonciello@amd.com
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Mario Limonciello 2025-05-06 15:49:46 -05:00 • committed by Alex Deucher

parent 5c937b4a60

commit d1a46cdd00

1 changed files with 22 additions and 0 deletions

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drivers/gpu/drm/amd/amdgpu/vcn_v4_0_5.c

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