diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c index 19943356cca7..51a9708290dc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c @@ -108,3 +108,40 @@ void amdgpu_gfx_parse_disable_cu(unsigned *mask, unsigned max_se, unsigned max_s p = next + 1; } } + +void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev) +{ + int i, queue, pipe, mec; + + /* policy for amdgpu compute queue ownership */ + for (i = 0; i < AMDGPU_MAX_COMPUTE_QUEUES; ++i) { + queue = i % adev->gfx.mec.num_queue_per_pipe; + pipe = (i / adev->gfx.mec.num_queue_per_pipe) + % adev->gfx.mec.num_pipe_per_mec; + mec = (i / adev->gfx.mec.num_queue_per_pipe) + / adev->gfx.mec.num_pipe_per_mec; + + /* we've run out of HW */ + if (mec >= adev->gfx.mec.num_mec) + break; + + 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 */ + adev->gfx.num_compute_rings = + bitmap_weight(adev->gfx.mec.queue_bitmap, AMDGPU_MAX_COMPUTE_QUEUES); + + /* If you hit this case and edited the policy, you probably just + * need to increase AMDGPU_MAX_COMPUTE_RINGS */ + if (WARN_ON(adev->gfx.num_compute_rings > AMDGPU_MAX_COMPUTE_RINGS)) + adev->gfx.num_compute_rings = AMDGPU_MAX_COMPUTE_RINGS; +} |