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drm/amdgpu: Fix SDMA TO after GPU reset v3 

After GPU reset amdgpu_vm_clear_bo triggers VM flush
but job->vm_pd_addr is not set causing SDMA TO.

v2:
Per advise by Christian König avoid flushing VM for jobs where
job->vm_pd_addr wasn't explicitly set.

v3:
Shortcut vm_flush_needed early.

Fixes cbd5285 drm/amdgpu: move setting the GART addr into TTM.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Andrey Grodzovsky 2018-09-10 18:43:58 -04:00 committed by Alex Deucher
parent 1c860a022f
commit d8de8260a4
2 changed files with 3 additions and 1 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
View File

@ -73,6 +73,7 @@ int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
amdgpu_sync_create(&(*job)->sync);
amdgpu_sync_create(&(*job)->sched_sync);
(*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
(*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET;
return 0;
}

3
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
View File

@ -870,7 +870,8 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job, bool need_
}
gds_switch_needed &= !!ring->funcs->emit_gds_switch;
vm_flush_needed &= !!ring->funcs->emit_vm_flush;
vm_flush_needed &= !!ring->funcs->emit_vm_flush &&
job->vm_pd_addr != AMDGPU_BO_INVALID_OFFSET;
pasid_mapping_needed &= adev->gmc.gmc_funcs->emit_pasid_mapping &&
ring->funcs->emit_wreg;