From 26db706a6d77b9e184feb11725e97e53b7a89519 Mon Sep 17 00:00:00 2001 From: Prike Liang Date: Wed, 25 Aug 2021 13:36:38 +0800 Subject: [PATCH] drm/amdgpu: force exit gfxoff on sdma resume for rmb s0ix 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 Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c index 779f5c9..e32efcf 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c @@ -868,6 +868,12 @@ 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); @@ -876,6 +882,8 @@ 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); -- 2.7.4