From: Alex Deucher Date: Wed, 7 Jun 2017 10:46:06 -0400 Subject: drm/amdgpu: fix mec queue policy on single MEC asics Git-commit: cf8b611f55a775cc6514485e7dccf1c0e85b938d Patch-mainline: v4.13-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 Fixes hangs on single MEC asics. Fixes: 2ed286fb434 (drm/amdgpu: new queue policy, take first 2 queues of each pipe v2) Reviewed-by: Alex Xie Signed-off-by: Alex Deucher Acked-by: Petr Tesarik --- drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c | 12 +++++++++--- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 12 +++++++++--- drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 12 +++++++++--- 3 files changed, 27 insertions(+), 9 deletions(-) --- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c @@ -2825,9 +2825,15 @@ static void gfx_v7_0_compute_queue_acqui if (mec >= adev->gfx.mec.num_mec) break; - /* policy: amdgpu owns the first two queues of the first MEC */ - if (mec == 0 && queue < 2) - set_bit(i, adev->gfx.mec.queue_bitmap); + if (adev->gfx.mec.num_mec > 1) { + /* policy: amdgpu owns the first two queues of the first MEC */ + if (mec == 0 && queue < 2) + set_bit(i, adev->gfx.mec.queue_bitmap); + } else { + /* policy: amdgpu owns all queues in the first pipe */ + if (mec == 0 && pipe == 0) + set_bit(i, adev->gfx.mec.queue_bitmap); + } } /* update the number of active compute rings */ --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -1464,9 +1464,15 @@ static void gfx_v8_0_compute_queue_acqui if (mec >= adev->gfx.mec.num_mec) break; - /* policy: amdgpu owns the first two queues of the first MEC */ - if (mec == 0 && queue < 2) - set_bit(i, adev->gfx.mec.queue_bitmap); + if (adev->gfx.mec.num_mec > 1) { + /* policy: amdgpu owns the first two queues of the first MEC */ + if (mec == 0 && queue < 2) + set_bit(i, adev->gfx.mec.queue_bitmap); + } else { + /* policy: amdgpu owns all queues in the first pipe */ + if (mec == 0 && pipe == 0) + set_bit(i, adev->gfx.mec.queue_bitmap); + } } /* update the number of active compute rings */ --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -873,9 +873,15 @@ static void gfx_v9_0_compute_queue_acqui if (mec >= adev->gfx.mec.num_mec) break; - /* policy: amdgpu owns the first two queues of the first MEC */ - if (mec == 0 && queue < 2) - set_bit(i, adev->gfx.mec.queue_bitmap); + if (adev->gfx.mec.num_mec > 1) { + /* policy: amdgpu owns the first two queues of the first MEC */ + if (mec == 0 && queue < 2) + set_bit(i, adev->gfx.mec.queue_bitmap); + } else { + /* policy: amdgpu owns all queues in the first pipe */ + if (mec == 0 && pipe == 0) + set_bit(i, adev->gfx.mec.queue_bitmap); + } } /* update the number of active compute rings */