drm/amdgpu/gfx9: wait for reset done before remap

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There is a racing condition that cp firmware modifies
MQD in reset sequence after driver updates it for
remapping. We have to wait till CP_HQD_ACTIVE becoming
false then remap the queue.

v2: fix KIQ locking (Alex)
v3: fix KIQ locking harder

Acked-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Jiadong Zhu <Jiadong.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Jiadong Zhu 2024-07-02 09:03:49 +08:00 • committed by Alex Deucher

parent b5e1a3874f

commit fdbd69486b

1 changed files with 31 additions and 5 deletions

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drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c

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