[PATCH 84/88] drm/amdgpu: port fault_reserve_notify changes from radeon

[Alex Deucher]

From: Christian König <christian.koe...@amd.com>

Signed-off-by: Christian König <christian.koenig at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 55 +++++++++++++++++++-----------
 1 file changed, 35 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index b545f61..dcc6af9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -549,30 +549,45 @@ void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
 int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
 {
        struct amdgpu_device *adev;
-       struct amdgpu_bo *rbo;
-       unsigned long offset, size;
-       int r;
+       struct amdgpu_bo *abo;
+       unsigned long offset, size, lpfn;
+       int i, r;

        if (!amdgpu_ttm_bo_is_amdgpu_bo(bo))
                return 0;
-       rbo = container_of(bo, struct amdgpu_bo, tbo);
-       adev = rbo->adev;
-       if (bo->mem.mem_type == TTM_PL_VRAM) {
-               size = bo->mem.num_pages << PAGE_SHIFT;
-               offset = bo->mem.start << PAGE_SHIFT;
-               if ((offset + size) > adev->mc.visible_vram_size) {
-                       /* hurrah the memory is not visible ! */
-                       amdgpu_ttm_placement_from_domain(rbo, 
AMDGPU_GEM_DOMAIN_VRAM);
-                       rbo->placements[0].lpfn = adev->mc.visible_vram_size >> 
PAGE_SHIFT;
-                       r = ttm_bo_validate(bo, &rbo->placement, false, false);
-                       if (unlikely(r != 0))
-                               return r;
-                       offset = bo->mem.start << PAGE_SHIFT;
-                       /* this should not happen */
-                       if ((offset + size) > adev->mc.visible_vram_size)
-                               return -EINVAL;
-               }
+
+       abo = container_of(bo, struct amdgpu_bo, tbo);
+       adev = abo->adev;
+       if (bo->mem.mem_type != TTM_PL_VRAM)
+               return 0;
+
+       size = bo->mem.num_pages << PAGE_SHIFT;
+       offset = bo->mem.start << PAGE_SHIFT;
+       if ((offset + size) <= adev->mc.visible_vram_size)
+               return 0;
+
+       /* hurrah the memory is not visible ! */
+       amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_VRAM);
+       lpfn =  adev->mc.visible_vram_size >> PAGE_SHIFT;
+       for (i = 0; i < abo->placement.num_placement; i++) {
+               /* Force into visible VRAM */
+               if ((abo->placements[i].flags & TTM_PL_FLAG_VRAM) &&
+                   (!abo->placements[i].lpfn || abo->placements[i].lpfn > 
lpfn))
+                       abo->placements[i].lpfn = lpfn;
+       }
+       r = ttm_bo_validate(bo, &abo->placement, false, false);
+       if (unlikely(r == -ENOMEM)) {
+               amdgpu_ttm_placement_from_domain(abo, AMDGPU_GEM_DOMAIN_GTT);
+               return ttm_bo_validate(bo, &abo->placement, false, false);
+       } else if (unlikely(r != 0)) {
+               return r;
        }
+
+       offset = bo->mem.start << PAGE_SHIFT;
+       /* this should never happen */
+       if ((offset + size) > adev->mc.visible_vram_size)
+               return -EINVAL;
+
        return 0;
 }

-- 
1.8.3.1