Commit 4cbbe348 authored by Yifan Zhang's avatar Yifan Zhang Committed by Alex Deucher

drm/amdgpu/gfx9: fix the doorbell missing when in CGPG issue.

If GC has entered CGPG, ringing doorbell > first page doesn't wakeup GC.
Enlarge CP_MEC_DOORBELL_RANGE_UPPER to workaround this issue.
Signed-off-by: default avatarYifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 7de5c0d7
......@@ -3673,8 +3673,12 @@ static int gfx_v9_0_kiq_init_register(struct amdgpu_ring *ring)
if (ring->use_doorbell) {
WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_LOWER,
(adev->doorbell_index.kiq * 2) << 2);
/* If GC has entered CGPG, ringing doorbell > first page doesn't
* wakeup GC. Enlarge CP_MEC_DOORBELL_RANGE_UPPER to workaround
* this issue.
*/
WREG32_SOC15(GC, 0, mmCP_MEC_DOORBELL_RANGE_UPPER,
(adev->doorbell_index.userqueue_end * 2) << 2);
(adev->doorbell.size - 4));
}
WREG32_SOC15_RLC(GC, 0, mmCP_HQD_PQ_DOORBELL_CONTROL,
......
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