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drm/amdgpu: allocate queues horizontally across pipes

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Pipes provide better concurrency than queues, therefore we want to make
sure that apps use queues from different pipes whenever possible.

Optimize for the trivial case where an app will consume rings in order,
therefore we don't want adjacent rings to belong to the same pipe.

Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Andres Rodriguez <andresx7@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andres Rodriguez
2017-02-03 17:31:38 -05:00
committed by Alex Deucher
parent 5e7095625d
commit e33fec4835
3 changed files with 111 additions and 67 deletions
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13
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -1803,6 +1803,19 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
return NULL;
}
static inline bool amdgpu_is_mec_queue_enabled(struct amdgpu_device *adev,
int mec, int pipe, int queue)
{
int bit = 0;
bit += mec * adev->gfx.mec.num_pipe_per_mec
* adev->gfx.mec.num_queue_per_pipe;
bit += pipe * adev->gfx.mec.num_queue_per_pipe;
bit += queue;
return test_bit(bit, adev->gfx.mec.queue_bitmap);
}
/*
* ASICs macro.
*/