[PATCH v2 0/3] Add workaround for VCN timeouts

[Mario Limonciello]

There is an issue reported on platforms with VCN 4.0.5 that some jobs
are timing out.  This leads to a full GPU reset.  That full GPU reset
exposed a number of problems in DCN that have since been fixed, but
still the GPU reset means a black screen for ~500ms while the GPU resets.

However the issue with VCN in this case doesn't require a full GPU reset
to recover, just resetting VCN is enough.

For a workaround while the VCN issue is still being root caused lessen
the impact of VCN timeouts use the per-ring reset functionality to reset
just VCN.

v2:
 Also add support for per ring reset on other newer vcn4 and vcn5.
Mario Limonciello (3):
  drm/amd: Add per-ring reset for vcn v4.0.5 use
  drm/amd: Add per-ring reset for vcn v4.0.0 use
  drm/amd: Add per-ring reset for vcn v5.0.0 use

 drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c   | 17 ++++++++++++++++-
 drivers/gpu/drm/amd/amdgpu/vcn_v4_0_5.c | 22 ++++++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/vcn_v5_0_0.c | 17 ++++++++++++++++-
 3 files changed, 54 insertions(+), 2 deletions(-)

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2.49.0