From b3cd285fa68d162a53c2eb4e23bc4fc1ab7d97f6 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Christian=20K=C3=B6nig?= Date: Mon, 5 Feb 2018 17:38:01 +0100 Subject: [PATCH] drm/amdgpu: update the PASID mapping only on demand MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Updating the PASID is rather heavyweight and shouldn't be done all the time. Signed-off-by: Christian König Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h | 3 ++ drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 37 +++++++++++++++++++------ 3 files changed, 32 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c index 563e74755aab..a1c78f90eadf 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.c @@ -607,6 +607,7 @@ void amdgpu_vmid_mgr_fini(struct amdgpu_device *adev) amdgpu_sync_free(&id->active); dma_fence_put(id->flushed_updates); dma_fence_put(id->last_flush); + dma_fence_put(id->pasid_mapping); } } } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h index 20d4eca6cd6a..7625419f0fc2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.h @@ -57,6 +57,9 @@ struct amdgpu_vmid { uint32_t gws_size; uint32_t oa_base; uint32_t oa_size; + + unsigned pasid; + struct dma_fence *pasid_mapping; }; struct amdgpu_vmid_mgr { diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index afa16a862eaa..0b237e027cab 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -591,14 +591,24 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_ id->oa_base != job->oa_base || id->oa_size != job->oa_size); bool vm_flush_needed = job->vm_needs_flush; + bool pasid_mapping_needed = id->pasid != job->pasid || + !id->pasid_mapping || + !dma_fence_is_signaled(id->pasid_mapping); + struct dma_fence *fence = NULL; unsigned patch_offset = 0; int r; if (amdgpu_vmid_had_gpu_reset(adev, id)) { gds_switch_needed = true; vm_flush_needed = true; + pasid_mapping_needed = true; } + gds_switch_needed &= !!ring->funcs->emit_gds_switch; + vm_flush_needed &= !!ring->funcs->emit_vm_flush; + pasid_mapping_needed &= adev->gmc.gmc_funcs->emit_pasid_mapping && + ring->funcs->emit_wreg; + if (!vm_flush_needed && !gds_switch_needed && !need_pipe_sync) return 0; @@ -608,27 +618,36 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_ if (need_pipe_sync) amdgpu_ring_emit_pipeline_sync(ring); - if (ring->funcs->emit_vm_flush && vm_flush_needed) { - struct dma_fence *fence; - + if (vm_flush_needed) { trace_amdgpu_vm_flush(ring, job->vmid, job->vm_pd_addr); amdgpu_ring_emit_vm_flush(ring, job->vmid, job->vm_pd_addr); - if (adev->gmc.gmc_funcs->emit_pasid_mapping && - ring->funcs->emit_wreg) - amdgpu_gmc_emit_pasid_mapping(ring, job->vmid, - job->pasid); + } + if (pasid_mapping_needed) + amdgpu_gmc_emit_pasid_mapping(ring, job->vmid, job->pasid); + + if (vm_flush_needed || pasid_mapping_needed) { r = amdgpu_fence_emit(ring, &fence); if (r) return r; + } + if (vm_flush_needed) { mutex_lock(&id_mgr->lock); dma_fence_put(id->last_flush); - id->last_flush = fence; - id->current_gpu_reset_count = atomic_read(&adev->gpu_reset_counter); + id->last_flush = dma_fence_get(fence); + id->current_gpu_reset_count = + atomic_read(&adev->gpu_reset_counter); mutex_unlock(&id_mgr->lock); } + if (pasid_mapping_needed) { + id->pasid = job->pasid; + dma_fence_put(id->pasid_mapping); + id->pasid_mapping = dma_fence_get(fence); + } + dma_fence_put(fence); + if (ring->funcs->emit_gds_switch && gds_switch_needed) { id->gds_base = job->gds_base; id->gds_size = job->gds_size; -- 2.30.2