drm/amdgpu: force exit gfxoff on sdma resume for rmb s0ix

commit 26db706a6d77b9e184feb11725e97e53b7a89519 upstream.

In the s2idle stress test sdma resume fail occasionally,in the
failed case GPU is in the gfxoff state.This issue may introduce
by firmware miss handle doorbell S/R and now temporary fix the issue
by forcing exit gfxoff for sdma resume.

Signed-off-by: Prike Liang <Prike.Liang@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>

diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
index 7486e5306786793e4df70f311cb46762475ff6b8..27e0ca615edc1cc46aafb1dbdc40f30f25792d78 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c
@@ -883,6 +883,12 @@ static int sdma_v5_2_start(struct amdgpu_device *adev)
                        msleep(1000);
        }
 
+       /* TODO: check whether can submit a doorbell request to raise
+        * a doorbell fence to exit gfxoff.
+        */
+       if (adev->in_s0ix)
+               amdgpu_gfx_off_ctrl(adev, false);
+
        sdma_v5_2_soft_reset(adev);
        /* unhalt the MEs */
        sdma_v5_2_enable(adev, true);
@@ -891,6 +897,8 @@ static int sdma_v5_2_start(struct amdgpu_device *adev)
 
        /* start the gfx rings and rlc compute queues */
        r = sdma_v5_2_gfx_resume(adev);
+       if (adev->in_s0ix)
+               amdgpu_gfx_off_ctrl(adev, true);
        if (r)
                return r;
        r = sdma_v5_2_rlc_resume(adev);