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drm/amdgpu: flush the HDP only once for CPU based VM updates 

No need to do this after every single update.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2017-07-11 17:23:29 +02:00 committed by Alex Deucher
parent 03918b36f6
commit 68c62306b3
1 changed files with 12 additions and 4 deletions
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16
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -992,10 +992,6 @@ static void amdgpu_vm_cpu_set_ptes(struct amdgpu_pte_update_params *params,
i, value, flags); i, value, flags);
addr += incr; addr += incr;
} }
/* Flush HDP */
mb();
amdgpu_gart_flush_gpu_tlb(params->adev, 0);
} }
static int amdgpu_vm_wait_pd(struct amdgpu_device *adev, struct amdgpu_vm *vm, static int amdgpu_vm_wait_pd(struct amdgpu_device *adev, struct amdgpu_vm *vm,
@ -1238,6 +1234,12 @@ int amdgpu_vm_update_directories(struct amdgpu_device *adev,
if (r) if (r)
amdgpu_vm_invalidate_level(&vm->root); amdgpu_vm_invalidate_level(&vm->root);
if (vm->use_cpu_for_update) {
/* Flush HDP */
mb();
amdgpu_gart_flush_gpu_tlb(adev, 0);
}
return r; return r;
} }
@ -1745,6 +1747,12 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
list_add(&bo_va->vm_status, &vm->cleared); list_add(&bo_va->vm_status, &vm->cleared);
spin_unlock(&vm->status_lock); spin_unlock(&vm->status_lock);
if (vm->use_cpu_for_update) {
/* Flush HDP */
mb();
amdgpu_gart_flush_gpu_tlb(adev, 0);
}
return 0; return 0;
} }