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| author | Yifan Zhang <yifan1.zhang@amd.com> | 2021-06-10 05:10:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-23 15:42:53 +0300 |
| commit | bc58ec307ce93a0bcb14f4cdcd8e18ac7b4ebf10 (patch) | |
| tree | 45bd0093346d2b221f4c284c83f41f430dc2479d | |
| parent | 96b4126f8c371b64b39a2faab8cb4d39dd777411 (diff) | |
| download | linux-bc58ec307ce93a0bcb14f4cdcd8e18ac7b4ebf10.tar.xz | |
drm/amdgpu/gfx10: enlarge CP_MEC_DOORBELL_RANGE_UPPER to cover full doorbell.
commit 1c0b0efd148d5b24c4932ddb3fa03c8edd6097b3 upstream.
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: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c index fc8da5fed779..3c92dacbc24a 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c @@ -6590,8 +6590,12 @@ static int gfx_v10_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(GC, 0, mmCP_HQD_PQ_DOORBELL_CONTROL, |