drm/amdgpu: enable GTT PD/PT for raven v3

Should work on Vega10 as well, but with an obvious performance hit.

Older APUs can be enabled as well, but will probably be more work.

v2: fix error checking
v3: use more general check

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index f17fb3c63f43..25b390dc8636 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -342,6 +342,9 @@ int amdgpu_vm_validate_pt_bos(struct amdgpu_device *adev, struct amdgpu_vm *vm,
                         list_move(&bo_base->vm_status, &vm->moved);
                         spin_unlock(&vm->moved_lock);
                 } else {
+                        r = amdgpu_ttm_alloc_gart(&bo->tbo);
+                        if (r)
+                                break;
                         list_move(&bo_base->vm_status, &vm->relocated);
                 }
         }
@@ -417,6 +420,10 @@ static int amdgpu_vm_clear_bo(struct amdgpu_device *adev,
         if (r)
                 goto error;
 
+        r = amdgpu_ttm_alloc_gart(&bo->tbo);
+        if (r)
+                return r;
+
         r = amdgpu_job_alloc_with_ib(adev, 64, &job);
         if (r)
                 goto error;
@@ -482,7 +489,12 @@ static void amdgpu_vm_bo_param(struct amdgpu_device *adev, struct amdgpu_vm *vm,
         bp->size = amdgpu_vm_bo_size(adev, level);
         bp->byte_align = AMDGPU_GPU_PAGE_SIZE;
         bp->domain = AMDGPU_GEM_DOMAIN_VRAM;
-        bp->flags = AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS;
+        if (bp->size <= PAGE_SIZE && adev->asic_type >= CHIP_VEGA10 &&
+            adev->flags & AMD_IS_APU)
+                bp->domain |= AMDGPU_GEM_DOMAIN_GTT;
+        bp->domain = amdgpu_bo_get_preferred_pin_domain(adev, bp->domain);
+        bp->flags = AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS |
+                AMDGPU_GEM_CREATE_CPU_GTT_USWC;
         if (vm->use_cpu_for_update)
                 bp->flags |= AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED;
         else